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- OS/2 2.0 TECHNICAL QUESTIONS AND ANSWERS
- ----------------------------------------
-
- Mark Chapman
- IBM NDD National Support Center, Altanta, GA, USA
- Copyright (c) IBM Corporation 1989-1992.
-
- Compatibility/Installation
- --------------------------
- Q. What's the difference between the "regular" OS/2 2.0 package and the upgrade package.
- A. The upgrade is identical in all respects except one: The first two diskettes contain
- "sniffer" code to detect the presence of DOS or Windows. If found, OS/2 installs normally. If
- not, installation is terminated. The upgrade package is sold as an upgrade from DOS or
- Windows, so one or both must be present.
-
- Q. If DOS must be present on the disk before I can install OS/2 2.0, does this mean I am
- limited to a FAT partition? And what about Boot Manager for multiple partitions?
- A. When the sniffer program finds DOS or Windows on the system, installation proceeds
- normally, offering the same opportunities to partition and format your drives as the
- "off-the-shelf" package.
-
- Q. If the sniffer program has to find DOS or Windows on my system, does this mean that if
- for some reason I have to format the drive I must install DOS again before reinstalling OS/2?
- A. No. After the sniffer program finds DOS or Windows the first time, it modifies the
- installation so that the sniffer program does not operate for future installs. It is only used
- until the first successful install.
-
- Q. I have installed OS/2 2.0 several times now, but it never prompts me for whether I want to
- install Boot Manager.
- A. The installation program doesn't specifically prompt for that. Just make sure you don't
- accept the default partition setup. This will put you into FDISK, which will allow you to install
- Boot Manager.
-
- Q. Are there any known problems installing OS/2 2.0 on a PC using the Always IN-2000 SCSI
- Host adapter?
- A. Yes. Contact Always Technology to obtain BIOS upgrade VCN:1-02 for the controller.
-
- Q. Are there any known problems involving an AOX add-in processor card in a Micro Channel
- PS/2?
- A. If you encounter problems installing or booting OS/2 with this configuration, contact AOX
- for the latest "flash PROM" code update.
-
- Q. I have tried installing OS/2 2.0 on my L40, but I get CRC errors and the installation locks
- up. I have tried several sets of diskettes with the same results.
- A. Some early L40s had inadequate shielding around the diskette drive that shows up when
- installing OS/2. The power supply, which is beside the drive emits more electromagnetic
- interference when multiple devices are running concurrently, such as when OS/2 is multitasking
- (while installing diskette 3, for example). If you have verified that the diskettes themselves
- are not defective, replace the diskette drive.
-
- Q. I have tried installing OS/2 2.0 on my P70, but I get CRC errors and the installation locks
- up. I have tried several sets of diskettes with the same results.
- A. Some early P70s had an engineering defect that only shows up with multitasking operating
- systems (including OS/2 and AIX). There is an Engineering Change Announcement (ECA) that
- fixes this problem. Take your system in to your dealer and have them service the system
- under warranty. ECA068 will extend the warranty indefinitely for this particular problem,
- without charge.
-
- Q. Is Super VGA (SVGA) supported by OS/2 2.0?
- A. Yes, to some extent. The following Super VGA boards have been tested and found to
- work with OS/2 2.0 for DOS applications (only) that make use of SVGA modes:
-
- o Boca Super VGA (Boca Research Inc.)
- o Orchid ProDesigner IIs (Orchid Technology)--ISA and MCA versions
- o STB PowerGraph VGA (STB Systems, Inc.)
- o Trident TVGA (Trident Microsystems, Inc.)--8900b and c levels
- o VGA Wonder XL Series (ATI Technologies, Inc.)
- o Video Seven VRAM II (Video Seven)
- o 8514 Ultra, or 8514 Graphics Ultra (ATI)--Must be installed as an 8514 and as a primary
- display; it will default to high-resolution mode. Do not install it as VGA.
-
- Note: Other adapters that use the ATI, Headland, Trident, Tseng, or Western Digital chipsets
- may also work, but have not been tested. Additional SVGA support, as well as SVGA drivers
- for Windows and OS/2 applications will be shipping in a free update later information about
- SVGA support in OS/2 2.0, refer to the README file in the Information folder.
-
- Q. Is there an easy way to identify the chipset used on my card?
- A. Yes. Run the SVGA WHO command from within a DOS session, and it will identify the
- adapter and chipset types used.
-
- Q. What about support for the TI and S3 chipsets?
- A. Boards which are coprocessor-based are the fastest, but take the longest to develop
- software for. No drivers are yet available for these cards, nor have any developers
- announced dates when drivers will be available.
-
- Q. Is there anything special I should do if I have the 8514 Ultra or 8514 Graphics Ultra?
- A. Yes. You should change the statement in CONFIG.SYS from:
- DEVICE=C:\OS2\MDOS\VVGA.SYS
- to
- DEVICE=C:\OS2\MDOS\VSVGA.SYS
-
- Q. I'm getting a C000005 error during installation and can't continue.
- A. The problem results from a conflict with some SVGA cards. There is a replacement
- BVHSVGA.DLL file available on the IBM NSC BBS (404-835-6600) that allows installation.
-
- Q. Sometimes when going back and forth between DOS and Win-OS2 full-screen sessions the
- video doesn't resynch correctly.
- A. The problem results from a conflict with some SVGA cards that use the Tseng ET4000
- chipset. There is a replacement VSVGA.SYS driver available on the IBM NSC BBS
- (404-835-6600) that corrects the problem.
-
- Q. I'm getting a TRAP 000E whenever I open a DOS or Win-OS2 session.
- A. This problem occurs on systems with 4MB of RAM and some SVGA adapters. There is a
- replacement VSVGA.SYS driver available on the IBM NSC BBS (404-835-6600) that corrects
- the problem.
-
- Q. My system is hanging during installation (or bootup).
- A. If you have a SVGA card that uses the Western Digital PVGA1D chipset, there is a
- replacement BVHSVGA.DLL file available on the IBM NSC BBS (404-835-6600) that corrects
- this problem.
-
- Q. What SVGA functional support is actually provided with the OS/2 2.0 ship-level code, with
- no CSDs?
- A. The only support provided is the ability to switch to and from a full-screen DOS or
- Win-OS2 session and have the current state of the card saved, assuming you have used the
- SVGA ON command. (See the README file in the Information Folder for more details).
-
- Q. I've heard lots of rumors, but what are the real hardware requirements for OS/2 2.0?
- A. Any PC with a 386SX (or higher) processor, 4MB or more of RAM, and a 60MB hard drive.
- In many cases more memory and disk will be needed, depending on the user's needs. The
- base operating system itself uses about 3.5MB of RAM and 16-29MB of fixed disk (depending
- on what you choose to install). The remainder is available for application and data use. As
- most users eventually run more programs concurrently than they anticipated at first, make
- sure your system allows for growth if you are starting with near the minimum. Currently more
- than 200 non-IBM PCs have passed IBM's OS/2 compatibility testing, with more coming. (This
- list can be found in the OS/2 2.0 Tips section of the Technical Assistant.) Others are being
- tested, and the list is updated monthly.
-
- Q. If I install OS/2 2.0 on a PC that is not on the compatibility list, am I out of luck if I run
- into problems?
- A. No. Call the IBM Defect Support Center at 800-237-5511 and explain your problem. They
- will attempt to resolve your problem. If they can't step you though a workaround to the
- problem, or develop a patch to fix it within 90 days, you will be offered your money back for
- the OS/2 purchase.
-
- Q. Can OS/2 2.0 be installed from any drive besides A:?
- A. Yes, to a degree. The operating system itself, and Extended Services can be installed
- from a network drive (which can be any letter above C:). As far as physical diskette drives
- are concerned, it must be the A: drive. However, on many systems (such as the PS/2 Models
- 57/90/95), the system can be configured to boot from any internal diskette drive, making that
- drive the "A:" drive, regardless of cabling or physical position. Some systems also allow the
- cables to be swapped (perhaps with other adjustments) to produce a new "A:" drive. Consult
- your system vendor for directions.
-
- Q. I understand that most DOS and Windows apps should run under OS/2, but what kinds of
- programs are likely to fail?
- A. 1) Those that could compromise the integrity of the operating system, such as VCPI
- memory extenders and certain low-level disk utilities; 2) Those requiring extremely high
- interrupt rates (typically more than 1,000 interrupts per second), including software to support
- some fax and sound boards. 3) Those requiring a specific version of DOS. OS/2 2.0 provides
- an emulation of DOS 5.0, but some applications may need DOS 3.3, for example, and won't
- work with anything else. In this case, start a DOS image of the DOS 3.3 diskette (within a
- VDM), and run the the application under real DOS 3.3 inside a VDM.
-
- Some other applications may require special DOS Settings, and some may run with limited
- function. But overall, the large majority of programs will run "as is", and as faster or faster
- than before, with greater data integrity.
-
- Configuration and Setup
- -----------------------
- Q. I'm getting messages telling me that I don't have enough memory to perform an
- operation. What does this mean?
- A. It means the partition containing the SWAPPER.DAT file is full. When you load more
- programs and data files into memory that there is RAM to hold, some of those files are
- temporarily "swapped" to disk (or "virtual memory"). If the partition fills up because the
- SWAPPER.DAT file grows you will not be able to swap from memory anymore; thus the "out of
- memory" type messages.
-
- Q. What can I do if my SWAPPER.DAT file can't grow anymore due to lack of disk space?
- A. There are several solutions to this problem: 1) Move the SWAPPER.DAT file to a partition
- containing more room (just change the SWAPPATH=C:\OS2\SYSTEM statement in CONFIG.SYS
- to something else, such as D:\); 2) Free up some more space on the existing drive by
- deleting or moving some files or programs to another drive; or 3) Add more RAM, which will
- reduce the amount of swapping done. To find out how much swapping your system is doing,
- just type DIR d:\pathname\SWAPPER.DAT. The default size is 2MB. If your SWAPPER.DAT file
- is, for example 8MB, that is an indication that you probably need more RAM for your
- particular set of applications. Besides, beyond about 8MB of swapping system performance
- may degrade noticeably.
-
- Q. Does the SWAPPER.DAT file ever shrink in OS/2 2.0?
- A. Yes. Unlike OS/2 1.3, where SWAPPER.DAT was always as large as the largest block of
- data swapped to disk during the day (then reset to 512K at bootup), 2.0 is designed to
- expand and shrink SWAPPER.DAT as needed, in 512K increments.
-
- Q. SWAPPER.DAT doesn't shrink on my system,even after I close all programs.
- A. There is a temporary fix for this problem available from download from the IBM NSC BBS
- (404-835-6600). The file is called OS2KRNL.ZIP. It is also available (under a different name)
- on CompuServe.
-
- Q. I have a 90/95 with XGA, but no video RAM upgrade kit. Am I limited to medium-res
- mode?
- A. No. You may select between either 640x480x256-color mode, or 1024x768x16-color
- mode. If you add the upgrade kit later you can change to the hi-res/hi-color combination.
-
- Q. The START command in the OS/2 1.3 STARTUP.CMD batch file didn't provide any way to
- start a program minimized or maximized. Does 2.0?
- A. Yes. The / Max and /Min parameters to the START command allow this. For more details,
- and other parameters, refer to the OS/2 Command Reference.
-
- Q. Is there any way to query or change the default Boot Manager settings (timer, bootup
- partition, etc.) from the command line, without having to go into FDISKPM?
- A. Yes. Use the SETBOOT command. For details, refer to the OS/2 Command Reference.
-
- Q. I get a SYS3176 error when I try to start a DOS or Win-OS2 command prompt session.
- A. Try setting the HW_ROM_TO_RAM DOS setting in the VDM to ON. This copies ROM BIOS
- to RAM.
-
- Q. I'm getting video corruption when returning to Win-OS2 full-screen sessions.
- A. Try changing the DOS setting for VIDEO_SWITCH_NOTIFICATION to ON.
-
- Q. Some of my games in DOS full-screen sessions are "shakey".
- A. Try changing the DOS setting for VIDEO_RETRACE_EMULATION to OFF.
-
- Q. In the README file that comes with OS/2 (in the root directory, viewable in the Information
- folder), there is reference to a SCSI driver called OS2SCSI.SYS, supposedly in \OS2, yet I can't
- find it. Where is it?
- A. This is a typo in the README file. The name is actually OS2SCSI.DMD, not .SYS.
-
- Q. In OS/2 1.3 there was a Program Properties option to start an application on bootup. How
- do I "autostart" apps under 2.0?
- A. Two ways: 1) Use Create Shadow from an application pull-down menu to copy the
- application icon to the Startup folder; or 2) Leave the application running when you Shutdown
- the system. All running apps will autostart upon bootup.
-
- Q. Is there any way to set different execution priorities for individual DOS applications?
- A. No. Application priority is set by the application programmer. Since DOS, unlike OS/2,
- doesn't provide for multiple execution priority levels for apps there is no reason or way to
- build them into DOS apps. Therefore when they are run in a DOS session under OS/2 there is
- no inherent priority level distinction, and no way for a user to impose unique priority levels
- externally to the programs.
-
- Q. What's the minimum OS/2 version required for the CL57 color laptop?
- A. OS/2 V2.0 is the minimum requirement for the CL57.
-
- WPS/User Interface
- ------------------
- Q. Is there any way to lock the OS2.INI file so that a user can't make any changes to the
- desktop. (This is for a classroom environment.)
- A. No. The OS2.INI file stores all changes to the desktop (colors, window positions and sizes,
- autostart information, etc.). Locking the OS2.INI file so that no changes could be made would
- render OS/2 unusable.
-
- Q. Is there any way to prevent OS/2 from saving and autostarting programs, except those
- expressly put in the Startup folder?
- A. Yes. Add the following statement to CONFIG.SYS: SET
- RESTARTOBJECTS=STARTUPFOLDERSONLY
-
- Q. Is there any way to SHUTDOWN the system using cursor keys? I can't seem to get to the
- Desktop menu.
- A. To access the Desktop menu without a mouse, first press CTRL-ESC to bring up the
- Window List. Then cursor to the OS/2 Desktop entry and press Enter. This gets you back to
- the Desktop from wherever you were. Then press the Spacebar to deselect any icons on the
- desktop that are highlighted. Finally, press Shift-F10 to bring up the Desktop menu. From
- there just cursor to whatever option you want.
-
- Q. Is there any way to SHUTDOWN the system from the command line?
- A. Yes. Use the SETBOOT command. This will shut down and then reboot the system. For
- details, refer to the OS/2 Command Reference.
-
- Q. I have SVGA ON. Can I use 132-column modes in an OS/2 full-screen session?
- A. Yes.
-
- Q.I have SVGA ON. Can I window a DOS full-screen session (Alt-Home) to the PM desktop,
- even if it is Super VGA?
- A. Yes.
-
- Q. I have SVGA ON. Can I paste a SVGA image into the clipboard?
- A. Yes.
-
- Q. Is there any way to change the color of the icon text? When I drag/drop a color from the
- Color Palette it changes the Desktop color, not the icon text.
- A. Just hold the Ctrl key while dragging/dropping the color. This will change the text color
- instead of the Desktop.
-
- Q. I'm tired of always using the Sort option on a folder pulldown to arrange the icons the way
- I want them. Is there any way to make the icons sort automatically?
- A. Yes. Just Open the Settings for a folder, select the Sort notebook tab, and click on the
- check-box called "Always maintain sort order." Then close the Settings. This will make the
- change permanent for that folder, using whichever sort order you select. You can always
- change the sort order later, and the "auto-sort" will stay in effect, using the new sort order.
-
- Q. I went into the Desktop pulldown to change some settings, including "Minimize to desktop",
- so that my icons don't disappear when I minimize them. But now only some objects minimize
- to the desktop, while others still hide. What's wrong.
- A. By using the Desktop settings you changed only the behavior of icons on the Desktop; not
- icons contained in other folders. To make global changes to the way objects hide/minimize,
- go to the OS/2 System folder, then the System Setup folder, then open the System icon.
- From the Window notebook tab make the changes you want for all folders.
-
- Q. Is there any way to disable the Print Screen function?
- A. To enable or disable Print Screen, go to the OS/2 System folder, then the System Setup
- folder, then open the System icon. From the Print Screen notebook tab make your choice.
-
- Q. Why are the titles of some of my icons lighter in color than the others?
- A. These icons represent "shadows" of the original object. The lighter text is a way of
- distinguishing between originals and shadows.
-
- Q. What are "Shadow" icons and why would I want them?
- A. Each folder represents a directory on your disk. Each icon/object represents a file in that
- directory. If you copy an object from a folder to the Desktop, for example, you are also
- copying the file associated with that object. By creating a shadow of the original object you
- can put "pointers" to the file in many different folders or on the Desktop (which is actually a
- folder itself) for convenience, without also duplicating the file multiple times (and wasting a
- lot of disk space). In addition, if you duplicate the file, each is a separate copy, and
- updating one doesn't affect the others. By using shadows you can access the same copy of
- the file from multiple places, insuring that you are always working with the same version of
- the file.
-
- Q. If I shred an object (icon), does that delete the data file or program that it represents?
- A. No. Icons are independent of the physical disk files. There can be multiple icons
- representing the same files. Therefore there must be a way to delete some of them without
- also deleting the file they represent.
-
- Q. Is there a difference between deleting a shadow object and the original?
- A. Yes. If you delete a shadow, it does not affect other shadows of the original, or the
- original object itself. However if you delete the original, all shadows are deleted with it.
-
- Q. Am I limited to 11 character icon/object names on a FAT system?
- A. No. Like HPFS partitions, FAT partitions will support up to 254 character object names
- (however the physical file names on disk are still limited to 11 characters; that is a FAT
- limitation, not a Workplace Shell limitation).
-
- Q. I would like to get more icons side by side on my Desktop, but some of the icon names
- are so long that I can only get a few icons on each line. What can I do?
- A. You have two options 1) Rename the icons to something shorter (such as Windows Apps
- #2, instead of Additional Windows Programs); or 2) Insert carriage returns (using the Enter
- key) in the name to break the name into multiple short lines of text.
-
- Q. How do I copy or move an object with the mouse?
- A. To move, just press and hold the right mouse button over the object you wish to move,
- while dragging and dropping it elsewhere. To copy, press and hold the Ctrl key while dragging
- and dropping with the mouse.
-
- Q. I have noticed that different people have the icons on their desktop arranged differently.
- Some have them all over the screen, others have a single column down the left side of the
- screen with the icon text to the right (and a scroll bar to see those of the screen), and still
- others have multiple columns of icons. How do I select which way I want it?
- A. Press the right mouse button on a blank part of the Desktop to bring up the Desktop
- menu; then select Open, Settings. Finally, from the Settings screen select "Flowed" for
- multiple columns, "Non-Flowed" for single-column, or "Non-grid" (the default) for left-to-right,
- top-to-bottom arrangement all over the screen. Then close the Settings to save.
-
- Q. What is a "work area"? I see that option in a number of Settings notebooks under the
- File tab.
- A. A work area is a special kind of folder. The Desktop is a work area. When a work area is
- minimized or maximized, all active objects within that work area are also minimized or
- maximized. When a work area is closed, all open objects are also closed. When a work area
- is opened, all previously open objects are reopened (this is how the Desktop restarts your
- apps when you boot the system). For more information, open the Settings to the File tab
- and press the Help button, or search for "work area" in the Master Help Index object.
-
- Q. I see objects across the bottom of my desktop that have "halos" or boxes around them.
- What are they?
- A. They are minimized objects. Depending on how the desktop is setup, objects can be
- minimized on the desktop, minimized inside the Minimized Viewer folder (which can be opened
- on the desktop to see the minimized icons), or Hidden. Hidden objects can be seen by
- double-clicking on the original object. To specify which way you would like your objects to
- appear, go to the Desktop settings (right mouse button, Open, Settings.), go to the Window
- tab, and make your selection in the "Minimized Window Behavior" box. If you specify one of
- the Minimized options, make sure to also change the "Button appearance for windows" box to
- "Minimize button". If you leave it set to "Hide button" the icons will be hidden rather than
- minimized.
-
- Q. How do I start another copy of a program from an icon without having to duplicate the
- object? When I click on the icon the already-running session pops up.
- A. Go to the Desktop settings (right mouse button, Open, Settings.), go to the Window tab,
- and specify "Create new window" in the "Object open behavior" box. Then close the Settings
- to save the changes.
-
- Q. Where is the Shutdown option? There is no Desktop Manager, as there was in OS/2 1.x.
- A. Just press the right mouse button with the pointer over any blank part of the desktop.
- This will bring up the Desktop menu.
-
- Q. Where is the keyboard Lockup option? There is no Utilities Group, as there was in OS/2
- 1.x.
- A. Just press the right mouse button with the pointer over any blank part of the desktop.
- This will bring up the Desktop menu. From there select Lockup now to initiate it, or open the
- Settings to the Lockup notebook tab to change the Lockup settings (note that there are
- three pages of Lockup settings to be changed).
-
- Q. Is there a "screen blanker" program in OS/2 2.0?
- A. Yes; two in fact. One is the Lockup program, which allows you to specify a timeout value
- after which to blank out the screen, and replace it with a bitmap image. The program also
- prompts for a keyboard password to use when locking the keyboard. There is also an autodim
- feature. There is no way to use this program as a screen blanker without the keyboard
- password feature, though. The other program, Cat and Mouse, offers a "hide" button that
- blanks the screen and displays only the icon of a cat running around the screen. This
- feature does not require a keyboard password, but also doen't offer an auto-timeout feature
- (unlike the Lockup program). Cat and Mouse must be manually started.
-
- Q. Is there a way to printscreen the entire WPS desktop?
- A. Yes. Simply use the left mouse button to click on an empty part of the desktop and then
- use the Print Screen key. Or to print only one window on the desktop, select that window and
- then use the Print Screen key.
-
- Q. Does OS/2 2.0 require a mouse?
- A. No, 2.0 is fully enabled for keyboard-only use; however most users will find the mouse
- more convenient for many tasks.
-
- Q. Is there any way to get to the Selective Install panel from a command prompt?
- A. Yes. Just type INSTALL.
-
- Q. I understand that OS/2 is supposed to be completely keyboard accessible, but I can't seem
- to figure out how to select icons without a mouse.
- A. Use the cursor (arrow) keys to move from icon to icon, then press the Enter key to select
- the one you want.
-
- Q. Is there an easy to change a DOS or Windows full-screen session into a windowed
- session, or vice-versa?
- A. Yes. Just use the Alt-Home key combination to toggle between full-screen and
- windowed. This procedure does not work for OS/2 sessions; just DOS or Windows apps.
-
- DOS/Windows Sessions (VDMs)
- ---------------------------
- Q. Some of my apps fail to see EMS memory in the VDM, even though it is set up correctly.
- A. There is a fix, available for download from the IBM NSC BBS (404-835-6600), called
- VEMM.ZIP, which corrects the problem of several Lotus and other applications failing to see
- the EMS memory support provided in a VDM.
-
- Q. I have an IBM Internal Tape Backup Unit. Can I use it with the Internal Tape Backup
- Program running in a VDM?
- A. No. The software has been tested and does not work correctly in a VDM. There is,
- however, a PM version of this program, called PMTape V2.01, that works correctly with the
- Workplace Shell, supports long filenames, and will correctly restore files backed up with the
- DOS and 16-bit OS/2 versions of the program.
-
- Q. I understand that most DOS and Windows apps should run under OS/2, but what kinds of
- programs are likely to fail?
- A. 1) Those that could compromise the integrity of the operating system, such as VCPI
- memory extenders and certain low-level disk utilities; 2) Those requiring extremely high
- interrupt rates (typically more than 1,000 interrupts per second. 3) Those requiring a specific
- version of DOS. OS/2 2.0 provides an emulation of DOS 5.0, but some applications may need
- DOS 3.3, for example, and won't work with anything else. In this case, start a DOS image of
- the DOS 3.3 diskette (within a VDM), and run the the application under real DOS 3.3 inside a
- VDM. Some other applications may require special DOS Settings, and some may run with
- limited function. But overall, the large majority of programs will run "as is", and as faster or
- faster than before, with greater data integrity.
-
- Q. Are there any restrictions to what versions of DOS can be used in a Boot Image (Virtual
- DOS Boot)?
- A. Only that you must use a version of DOS that supports your hardware. (For example, you
- can't use DOS 2.0 on a system with 1.44MB diskette drives, because DOS 2.0 doesn't
- recognize anything larger than 360K diskette drives). Other than that, you are free to use
- any operating system that will run on an 8086 processor (including IBM DOS, MS DOS, DR
- DOS, and even CPM/86).
-
- Q. Is DDE supported?
- A. Yes; between any combination of Windows and OS/2 applications.
-
- Q. Is OLE supported?
- A. Yes; between Windows applications.
-
- Q. I just tried to cut-and-paste between an OS/2 application and a Windows program, but the
- Paste option in the Winapp's menu was "grayed-out". What do I have to do to cut/paste
- between applications?
- A. Either your Windows clipboard or your OS/2 clipboard, or both, were set to "private". Both
- must be set to Public before you can do any cutting and pasting back and forth. When you
- start the full-screen Windows session, or a Windows app, there will be a clipboard icon
- opened on the Windows Desktop. If you start a Windows or OS/2 app in a window, the
- clipboard icon will appear on the OS/2 desktop. From within both the Windows and OS/2
- clipboard icons, there is an Option choice on the action bar. Clicking on this will show
- whether the clipboard is Public (indicated by a check-mark) or not. If not, click on the line
- that says Public clipboard. This will change the clipboard to public. After you have ensured
- that both clipboards are public, you should have no trouble cutting and pasting between
- applications. If you still can't paste, close the program you can't paste into, and restart it. It
- should work now.
-
- Q. I know that OS/2 2.0 comes with Adobe Type Manager for OS/2, but will I have to buy ATM
- for Windows for my Windows apps?
- A. No. OS/2 2.0 supplies ATM for both OS/2 and Windows applications.
-
- Q. When I "migrate" DOS and Windows apps to OS/2 to "register" them with the OS/2
- Workplace Shell, how do I know what DOS Settings to use for each application.
- A. In most cases the default settings will work, but in some cases tuning may be required or
- desirable. OS/2 2.0 ships with a database of settings for more than 225 of the most popular
- DOS and Windows applications. These are automatically applied when you migrate these
- applications. Settings for other applications will be added with future versions and Corrective
- Service (patch) Diskettes.
-
- Q. I have a DOS application that requires Alt-ESC (or Ctrl-Esc) to switch between screens.
- But OS/2 reserves those key combinations for switching between sessions. Is there any way
- to free up one or both of these combinations for DOS apps?
- A. Yes. From a Virtual DOS Machine (VDM) that will be running such a DOS app simply go
- into the DOS Settings (right mouse button from the application icon, then select Settings, O
- pen; then Session DOS Settings) and find the setting called KYBD_CTRL_BYPASS. Select this
- and from the selection box in the upper right-hand corner choose either ALT_ESC or
- CTRL_ESC. Finally, press the Save pushbutton and close the Settings.
-
- Q. Can I use my favorite DOS memory manager in a VDM (DOS session)?
- A. No, but there is no need for one, since each VDM already includes EMS, XMS, and DPMI
- memory managers.
-
- Q. Can I use my favorite DOS memory manager from inside a bootable DOS image?
- A. Even inside a bootable DOS image (actually named a Virtual DOS Boot, or VDB) the
- answer is the same, since the OS/2 memory managers are still available inside a VDM running
- a VDB image.
-
- Q. Can I use my favorite DOS/Windows disk caching utility in a VDM (DOS session)?
- A. No, but there is no need for one, since each all applications, DOS, Windows, and OS/2 are
- automatically cached by OS/2.
-
- Q. What EMS (Expanded Memory Specification) level is provided in a VDM?
- A. EMS V4.0, the same as DOS 4.0/5.0 provide.
-
- Q. Does using multiple Virtual DOS Machines for several different DOS programs simplify the
- complicated process of finding available address space between 640K and 1MB for Expanded
- memory (EMS) and certain kinds of adapters?
- A. Yes, since network adapters, SCSI controllers, and most other device addresses are
- actually loaded in the address space above 1MB, there should be few conflicts with EMS
- memory drivers.
-
- Q. Are DOS TSRs supported in VDMs?
- A. Yes. Even though they have never been officially supported in true DOS (due to a lack of
- any standard TSR specification, and the likelihood of system lockups when using multiple TSRs
- concurrently) they will be supported under 2.0. Because TSRs are loaded into a VDMs Upper
- Memory Blocks (UMBs), they run in Protected mode and are prevented from touching other
- VDMs or OS/2 sessions. There is no opportunity for a TSR to crash the entire system. The
- worst it can do is lock up its own sessions, which can then be terminated from the OS/2
- desktop. No rebooting of the system (with possible loss of data) is necessary.
-
- Q. Can EMS/XMS/DPMI drivers be loaded globally for all VDMs, or must I set them separately
- in each VDM?
- A. Either. Global settings are done from CONFIG.SYS using device drivers. In addition,
- individual VDMs can enable or disable this support from the DOS Settings. For driver details,
- refer to the OS/2 Command Reference.
-
- Q. When EMS memory is enabled in CONFIG.SYS, what is the default memory allocation?
- A. 4MB, but up to 32MB may be specified, per VDM, if needed.
-
- Q. Will all EMS-compatible DOS and Windows programs work in a VDM?
- A. It depends on the application. All DOS apps that use the EMS 4.0 driver provided with
- DOS 4.0 and higher, including all Windows apps, will work. Older applications that directly
- invoked EMS memory (without using an external DOS driver) may not work.
-
- Q. Are there any suggestions for the order in which to load EMS and XMS drivers?
- A. For the best performance, load the EMS driver (VEMM.SYS) first, then all drivers that use
- expanded memory; then load the XMS driver next, followed by all drivers that use XMS.
- Lastly, load all drivers that use UMBs.
-
- Q. If an application supports more than one choice of EMX/XMS/DPMI memory, is there any
- preference?
- A. For performance reasons, choose XMS or DPMI over EMS. On the other hand, EMS and
- DPMI support more total RAM than XMS (32MB, 512MB, and 16MB, respectively).
-
- Q. What is the difference between Upper Memory Blocks (UMBs) and the High Memory Area
- (HMA)?
- A. UMBs are the memory area between 640K and 1MB. The HMA is the 64K memory range
- immediately above 1MB.
-
- Q. Does the XMS (Extended Memory Specification) driver support the use of the High Memory
- Area (HMA)?
- A. Yes. The HMA (the 64K immediately above 1MB) is supported. To enable the HMA
- specify DOS=HIGH in CONFIG.SYS.
-
- Q. Are there any limitations to Upper Memory Block (UMB) use?
- A. Yes. If multiple device drivers access UMBs, make sure the XMS driver is loaded last, to
- avoid conflicts.
-
- Printing/Printer Drivers
- ------------------------
- Q. My Windows apps print very slowly with the HP LaserJet driver.
- A. There is a replacement HPLJ driver (HPLJW.ZIP) available on the IBM NSC BBS
- (404-835-6600) that speeds up Windows printing by a factor of 6.
-
- Q. The drivers for some of IBM's older printers that were included in OS/2 1.3 are missing
- from 2.0. Is there any way to get them?
- A. Yes. A file called OS2PRINTER.ZIP on the NSC BBS (404-835-6600) containing these
- drivers may be downloaded. The same file (with a different name) may be found on
- CompuServe and the OS/2 BBS as well.
-
- Q. I want to print from DOS and Windows apps in a VDM, but I'm not sure which drivers to
- use (DOS/Windows or OS/2), and whether to use the DOS/Windows print buffer?
- A. If your DOS or Windows programs have their own drivers, use them. Set up a printer icon
- in OS/2 and install the IBMNULL driver. Make this the default driver for the system (from the
- pulldown menu for the null driver icon). That will cause all DOS and Windows programs to
- default to this driver, which does no processing of the printer data stream (which has already
- been done by the DOS/Windows application). OS/2 PM programs allow you to specify a
- particular driver to use, so the null driver will not be a program. (If you have OS/2 full-screen
- programs that do not allow you to specify a printer, and you do not wish to use the null
- driver as the default for these programs, you can temporarily change the default driver "on
- the fly" from the printer icon, and then change it back when you are done printing from that
- program.) Disable any print buffering done by a DOS or Windows program. The OS/2 print
- spooler buffers all printing done by DOS, Windows, and OS/2 apps. Another buffer only
- complicates things.
-
- Q. Is there any way to delete just one print job? When I double-click on my printer icon, I
- see a Delete option (which deletes the icon itself!) on the pulldown menu, and a Delete all
- jobs option, but no way to delete just one. The delete key doesn't work either.
- A. Use your right mouse button on the print job icon to bring up the pulldown menu for that
- specific job. Its menu includes a Delete option for that job.
-
- Q. When I try to print to a parallel printer, nothing happens, but I can print to a serial printer.
- What's wrong?
- A. There are a number of things that can result in no printing, but most result in an error
- message of some sort. If no message is encountered (and you have verified that the printer
- driver is correctly installed and setup), you may have a hardware device that is conflicting
- with the interrupt level used by the parallel port. LPT1 uses IRQ7, and LPT2 uses IRQ5.
- Some adapters, such as the SoundBlaster default to IRQ7, causing a conflict. Others,
- including some SCSI controllers default to IRQ5. Changing the adapter IRQ level to an unused
- one should "free up" your parallel port for printer use.
-
- Q. I have just installed OS/2, and when I try to print I get a "printer offline" message, and
- nothing prints. The same printer and cable worked under DOS.
- A. DOS does not use all 25 pins of a parallel printer cable, so to save money many cable
- manufacturers leave out a few unused pins. Because OS/2 lloks for some return signals from
- the printer to signal that the printer is jammed, out of paper, etc., OS/2 requires the use of
- more pins than DOS does. If your cable does not have all 25 pins a required signal won't get
- through and OS/2 will generate the "printer offline" message. The solution is to get a cable
- that uses all 25 pins.
-
- Q. What printers are supported by OS/2 2.0?
- A. For a complete list of the more than 200 printers supported, see the tip entitled
- Printers/Plotters Supported by OS/2 2.0 in the OS/2 2.x Tips section of the IBM PS/2 Technical
- Assistant.
-
- Q. How do I install downloadable (soft) fonts for my printer?
- A. First, find the printer object (icon) you wish to install the fonts for. Next, use the right
- mouse button to bring up the menu. From there select Open, Settings, Printer driver. Then
- select the driver you wish to install the fonts to, and use the right mouse button to bring up
- the menu. Again select Open and Settings. At the bottom of the Printer Properties dialog
- box press the Fonts button. Finally, specify the drive letter and path where the fonts can be
- found and press the Open button. You will see a list of the soft fonts you can select.
- Single-click on each one you want to add. When you have highlighted all you intend to add,
- press the Add button. The highlighted fonts will disappear from the "New Soft Fonts" window
- on the left and appear in the "Installed Fonts" window on the right. When they have all been
- installed, press the OK button to end and save your work. Then press OK on the Printer
- Properties dialog to return to the Settings book. From there close the settings and you are
- done.
-
- Q. Is there an OS/2 driver for the IBM 4216-020?
- A. Not from IBM; OS/2 only includes drivers for the 4216-030 and -031 models. There is a
- company, called David Goodenough & Associates, Limited that developed an OS/2 1.1/1.2
- driver for the model 20. It is possible that they also offer 1.3 and/or 2.0 versions of the
- driver. For more information, contact the vendor at:
-
- David Goodenough & Associates, Ltd.
- 283 City Road
- London, ECIV 1LA
- United Kingdom
- Phone: 44-71-490-2266
- Fax: 44-71-490-2343
-
- Note: This is not an endorsement of the product, nor a recommendation by IBM; simply
- information for your benefit.
-
- Q. If I have Windows drivers for printers not supported by OS/2, is there any way to use
- them?
- A. Yes. They can be installed through the Windows desktop, and made available to all
- Windows applications, however OS/2 programs will not be able to use them.
-
- Q. Is there any way to print to a disk file, instead of printing?
- A. Yes. From the printer icon, press mouse button 2 (usually the right button), then
- Open...Settings, then press the Output notebook tab. From the Output panel click on the
- Output to file checkbox, then close the Settings. Now when you send a print job to the
- printer, you will be prompted for a disk file name to print to.
-
- Other Device Drivers
- --------------------
- Q. There are so many different types of drivers in CONFIG.SYS now that I don't know where
- to put additional drivers? Is the order important, and if so, in what order do the files
- execute?
- A. Drivers are processed in the following order (by extension): .SYS .BID .VSD .TSD .ADD .I13
- .FLT .DMD. Among those with the same extension, drivers are processed in the order in
- which they appear.
-
- Q. I can't get an external IBM 5.25" drive (4869) to be recognized by a PS/2 model 80. I have
- added DEVICE=d:\OS2\EXTDSKDD.SYS to CONFIG.SYS. What else is needed?
- A. If the EXTDSKDD.SYS driver with OS2 2.0 doesn't work with the external 5.25 drive, use
- the original OS/2 1.3 driver, EXT5DD.SYS, that came with the drive. Put it in the OS2
- subdirectory, and change the DEVICE= statement to use the EXT5DD.SYS driver.
-
- Q. I know that the IBM2SCSI.ADD driver is for IBM SCSI controllers, but I can't find any
- documentation for the /LED parameter. What does it do?
- A. It is only used on a PS/2 Model 95 to simulate a disk activity light on the system
- information LED panel. (This replaces the separate DLITE program for OS/2 1.3.)
-
- Q. What is the difference between the COM.SYS driver and the COMDMA.SYS driver?
- A. There is no COMDMA.SYS driver. COM.SYS is used by all AT-bus PCs, and all PS/2s. The
- Command Reference in in error.
-
- Q. In the README file that comes with OS/2 (in the root directory, viewable in the Information
- folder), there is reference to a SCSI driver called OS2SCSI.SYS, supposedly in \OS2, yet I can't
- find it. Where is it?
- A. This is a typo in the README file. The name is actually OS2SCSI.DMD, not .SYS.
-
- HPFS/FAT
- --------
- Q. I am using Stacker on my DOS system to double my disk capacity. Can I use Stacker in a
- VDM?
- A. No. Stacker (and other similar disk compression utilities) can only compress/decompress
- files that are opened by DOS programs executing in the VDM, not OS/2 files (and may not
- even work on an HPFS partition). If an OS/2 program attempted to access these compressed
- files, there would be no way to decompress them (since the DOS Stacker version is not
- running in the OS/2 session attempting to open the files. Fortunately, Stac Technologies has
- announced plans for an OS/2 version of Stacker. Other vendors also may be planning OS/2
- versions. For details, contact the vendor.
-
- Q. When running CHKDSK on an HPFS partition I get a message that some files are
- "cross-linked." What can I do to fix these files?
- A. If you boot from the Installation diskette (and ESCape from the IBM logo screen to the A>
- prompt) then run CHKDSK C: /F:3, the files will be recovered. If the cross-linked files are
- on a partition other than C:, run CHKDSK d: /F:3 from the C: drive (where d: = the
- appropriate drive letter). It is not necessary to boot from the Installation Diskette in this case.
-
- Q. According to the red book (GG24-3730 - OS/2 V2.0 Vol. 1: Control Program) the HPFS
- limit is 512GB. But the announcement letter says 64GB. Which is it?
- A. The implemented maximum partition size is 64GB for HPFS partitions. The 512GB number
- in the red book is the theoretical limit, not currently implemented.
-
- Q. What is the maximum file size supported by 2.0?
- A. The maximum is 2GB for both FAT and HPFS partitions
-
- Q. What enhancements have been made to HPFS partitions for 2.0?
- A. Better performance, partly due to I/O command chaining, and partly to Scatter/Gather
- support, which has been added for devices that support it (such as the IBM SCSI adapters);
- and the maximum partition size has been increased.
-
- Q. What enhancements have been made to FAT partitions for 2.0?
- A. Better performance, partly due to adding Lazy Write support and larger cache size support
- (both previously available only with HPFS), and partly due to I/O command chaining; plus
- Autocheck support (previously available only with HPFS).
-
- Q. I have heard rumors that due to the performance enhancements made to "super FAT" in
- 2.0 it is now faster than HPFS. Is this true?
- A. At one point during beta testing the enhanced FAT support was improved to the point that
- it was faster than the early HPFS code; but subsequent tuning of HPFS turned this back
- around. In nearly all instances, HPFS is faster, has better data integrity, and uses less disk
- space than FAT.
-
- Q. In what cases would FAT be better than HPFS?
- A. If you have the minimum 60MB hard drive, there may be no performance advantage to
- HPFS (unless there are more than about 100-200 files in some directories), and the savings
- in disk space produced (due to the smaller allocation unit size used by HPFS) would be offset
- by the 300K disk overhead for an HPFS partition. But HPFS would still have the edge in data
- integrity, due to Hot Fixes. In all cases of >60MB partitions, HPFS has the performance
- edge.
-
- Q. What was that about saving disk space?
- A. In a FAT partition, to get around a hard limitation of the number of clusters (now called
- allocation units) available that produced the infamous "32MB limit", the cluster size doubles
- every time the partition size doubles (64MB partition=4K cluster; 128MB=8K; 256MB=16K;
- 512MB=32K; 1GB=64K; 2GB=128K). And since a 5 byte batch file takes a minimum of 1
- allocation unit, and since on average each file wastes half of an allocation unit, large FAT
- partitions waste a lot of space. Because HPFS partitions always use 512 byte (1 sector)
- allocation units, it wastes far less space, especially on large partitions, than FAT. Cases
- have been reported where a user reformatted a 1GB drive from FAT to HPFS, restoring all the
- same files as before, and "recovered" 100MB of previously wasted disk space. (Obviously,
- the amount of wasted space depends on how many small files are on the drive).
-
- Q. What is a "Hot Fix"?
- A. Hot Fixes are a mechanism whereby HPFS works around bad sectors on the disk and
- temporarily uses "spare blocks" of disk space to store the data that would normally have
- been written to the bad sector. Then when the system is rebooted, AUTOCHECK runs
- CHKDSK, marks the defective sector as bad, copies the spare block to a good sector, and
- makes the spare block available for reuse. In a FAT partition, on the other hand, the data
- would have been written to the bad sector, and the user would not have known until the next
- time he tried to access the data and received an error. The corrupted data would have been
- lost, at the least, and in the case of an indexed file all data after the bad sector may have
- been lost. If a binary file, such as a word processing document, spreadsheet, or other, it is
- possible that the entire file would have been rendered unusable. This is the big data integrity
- aspect of HPFS. (By the way, when a Hot Fix is applied OS/2 presents an informational
- message to that effect, letting you know what has occurred.)
-
- Q. Is there still a 1024-cylinder limit to disk drive sizes, as there was in OS/2 1.x?
- A. Yes and No. If the adapter reports to the operating system in absolute cylinders, 1024 is
- the limit. On the other hand controllers that use RBAs (Relative Block Addresses) will not
- have this limit. Sector-translating controllers, such as the IBM SCSI adapters use RBAs. If
- your controller does limit you to 1024 cylinders, when you partition your drives, all bootable
- partitions (including Boot Manager, all Primary, and any Extended partitions containing OS/2
- 2.0) must fall entirely within the first 1024 cylinders. Non-bootable partitions can be created
- beyond 1024 cylinders.
-
- Q. What is the maximum partition size supported by 2.0?
- A. The maximum is 64GB (increased from 2GB in 1.3) for HPFS partitions, but a practical
- usable size is 5-7GB per partition. FAT partitions are still limited to 2GB.
-
- Q. Under DOS, directory file names appear on the left side of the directory listing. But I
- installed OS/2 and now the names are on the right side? Why?
- A. File names in DOS and OS/2 FAT partitions are limited to 11 characters (8.3).
- Because filenames in an HPFS partition can be up to 254 characters long, putting the names
- on the right side of the DIR list allows the filenames to wrap to the next line (or more than
- one line) as necessary without disrupting the orderly columns of file size, date, and other
- information.
-
- Q. When I do a DIR of an HPFS partiton there is a column of numbers immediately to the left
- of the file and directory names that doesn't appear on a FAT partition directory listing. What
- is this information?
- A. It is the number of bytes of extended attributes associated with those files and
- directories.
-
- Q. Is there any way to strip the Extended Attributes from files, if desired?
- A. Yes. The command EAUTIL is expressly intended for that purpose. It strips the EA from
- files, and puts them in a separate file using a name you provide. It also allows the EAs to
- be reattached at a later time. This should not be done lightly. Make sure you have a valid
- reason for doing so. For more information, refer to the EAUTIL command in the OS/2
- Command Reference.
-
- Q. Is there any way to format a diskette or optical disk drive to HPFS?
- A. Only FAT formats are supported for removable media in OS/2 1.0-2.0.
-
- Productivity Apps/Games
- -----------------------
- Q. What communication protocols does Softerm (PM Terminal) support?
- A. Kermit, Kermit Server, Softrans, Xmodem (1K), Ymodem (1K), and Ymodem-G (1K).
-
- Q. What ASCII terminal emulations does Softerm (PM Terminal) support?
- A. ANSI 3.64, DEC VT-52, DEC VT-100, GEnie Terminal, IBM 3101 Model 10, IBM 3101 Model
- 20, IBM ANSI, IBMINVT100, and TTY.
-
- Q. Are any of these so-called "productivity" applications really useful, or are they just "toys"
- to give us a chance to "play" with OS/2 before buying useful software.
- A. Certainly it depends on your definition of "useful," but many of the Productivity apps are
- adequate for the needs of many users, without additional software. The PM Term async
- communications program, Enhanced Editor, PM Chart, calculator, notepad, Sticky Pad, alarm
- clock, calendar, to do list, Seek and Scan file browser, and others can all be used
- productively.
-
- Miscellaneous
- -------------
- Q. What is OASAS?
- A. OASAS is a program that runs under OS/2 1.3 or 2.0 and provides data striping and MNP 5
- fault-tolerance. It requires a SCSI-equipped PS/2 system with between 3 and 7 identical fixed
- disk drives. Through data-striping it allows those 3-7 drives to look to OS/2 like one large
- drive partition.
-
- Q. Does OASAS do mirroring/duplexing of drives?
- A. No. Only data striping. However the OS/2 LAN Server 2.0-Advanced program offers
- duplexing/mirroring.
-
- Q. Does OASAS work with multiple SCSI adapters?
- A. Yes and no. Since the OASAS drivers can't be loaded until OS/2 has booted, the boot
- drive can't be part of the array. Thus another drive/controller combination is required. To set
- up a disk array for OASAS there must be a second fixed disk adapter (SCSI or other) for the
- boot drive. Additional SCSI adapters will work with OS/2, as usual, but they will not be seen
- by OASAS for the purpose of fault-tolerance. Only one SCSI adapter is supported and used by
- OASAS.
-
- Q. What is GDDM OS/2 1.2?
- A. Graphical Data Display Manager is an OS/2 implementation of a product normally run on
- mainframes, for the display of graphical information. It is not available as a separately
- orderable product. It must be ordered as a feature by the mainframe location, through their
- IBM marketing rep.
-
- Q. Is there a MOVE command?
- A. Yes. It allows you to move files from one directory to another. It is equivalent to a
- COPY followed by a DEL in a single step. Refer to the OS/2 Command Reference for details.
-
- Q. Is there a way to delete OS/2 from my drive without having to reformat or repartition?
- A. Yes. 1) Start by using OS/2 to delete as much of itself as possible. You can open the
- drive icon for C: and drag/drop all the OS/2-related directory icons on the shredder. Most of
- the directories will be shredded, along with their contents. Some will report that some files
- cannot be deleted. But most will be. 2) Shutdown your system and reboot from the OS/2
- installation diskette, then insert diskette 1 when requested. 3) When the OS/2 logo screen
- comes up, press ESC to exit to the A> prompt. From there type: ATTRIB C:\xxxxx -S -H -R
- (where xxxxx = OS2BOOT, OS2KRNL, and OS2LDR, in turn). 4) Then use the same step on all
- the directories that had files that wouldn't delete (ATTRIB C:\dirname\*.* -S -H -R). 5) Next,
- use the DEL C:\dirname\*.* command to delete all the files that were just ATTRIBed. 6)
- Finally, use the RD command to remove the directories you just "unlocked" (e.g., RD
- C:\dirname). When you are done, you should have nothing more than your program and data
- files and directories left. (This assumes that if you want to return to DOS the partition is
- formatted to FAT. If it is HPFS, you will have to format the drive anyway.)
-
- Q. How does the "free 60 day OS/2 support" work?
- A. Users experiencing difficulty installing or using OS/2 2.0 may call the IBM Defect Support
- Center at 800-237-5511. From the time of the first call the user gets 60 days of unlimited
- free technical and service support through this number. After 60 days, if the user wishes to
- continue the service they may subscribe for $129 per year.
-
- Q. How does this differ from SystemXtra?
- A. SystemXtra is IBM's premier level of support for Personal System products, including OS/2.
- For more information about SystemXtra, call 800-IBM-XTRA.
-
- Q. Can you explain how the "OS/2 BBS" works?
- A. That can mean either of two different services. 1) There is an official BBS, accessed
- through an 800#, offered on a subscription basis for a fee, and only available to subscribers.
- For more information about this BBS and what it offers, call 800-547-1283; or 2) The IBM
- NSC BBS, which is open to the public, for free but as a long-distance call for those outside
- the local dialing area. It contains a number of "conferences" for the discussion of such
- products as OS/2, DOS, PS/2s and Networking. There is a large variety of downloadable
- software and software patches available. In addition there are online bulletins and databases
- of OS/2 software, non-IBM adapters for Micro Channel systems, and local PC User Groups.
- The number call for the IBM NSC BBS is 404-835-6600 (N,8,1). Registration is done on the
- fly for new users.
-
- Q. I understand why I would want to limit the available drive letters on a LAN, using
- LASTDRIVE= in CONFIG.SYS, but is there any reason to do so in a standalone environment?
- A. Yes. Each drive letter that is available for use reserves about 100 bytes of memory. So
- limiting the drive letters to E:, for example, frees up about 2K of RAM for other use.
-
- Q. What versions of OS/2 support Extended Services 1.0?
- A. OS/2 1.30.1 (CSD level 5015 or later), and OS/2 2.0.
-
- Q. Does the OS/2 2.0 Developer's Toolkit include a kernel debugger and a PM application
- debugger?
- A. Yes. Unlike the OS/2 1.3 toolkit which only includes a source code debugger (CodeView),
- the 2.0 toolkit includes all three.
-
- Q. Does OS/2 2.0 offer an UNDELETE command, like DOS 5.0?
- A. Yes. All deleted files are temporarily stored in a \DELETE directory in each partition.
- These files are purged upon bootup, so files must be undeleted before shutting down the
- system. Note: During installation the statement SET DELDIR=... that defines the directory to
- hold the deleted files is installed in CONFIG.SYS but disabled (to save disk space). To
- activate UNDELETE, you must remove the "REM " from the statement: REM SET DELDIR=....
-
- Q. What is a "thunk" or "thunking layer?"
- A. It is the code that allows 16-bit applications to run correctly in a 32-bit address space.
-
- ES Communications Manager
- -------------------------
- Q. Is there a shortcut to change the font size in a 3270 window without having to go through
- several layers of menus?
- A. Yes. Just press Alt-I. (It is printed on your 3270 emulation keyboard template, if you
- have one.)
-
- Q. Is there any way to get to the System Menu icon (in the upper left corner of the window)
- in a 3270 emulation session without a mouse?
- A. Yes. Just press Alt-spacebar. (It is printed on your 3270 emulation keyboard template, if
- you have one.)
-
- Q. Has anything been done to improve LAN support?
- A. Yes. Adoption of the new LAN Adapter and Protocol Support (LAPS) provides more
- efficient processing of the IEEE 802.2 and NETBIOS protocols with increased performance in
- both cases across tsupported LANS.
-
- Q. How many simultaneous workstations are supported through the Comm Manager SNA
- Gateway?
- A. 254 attached via either single or multiple adapters. (Successful operation in a given
- environment may depend on other factors, such as application load and/or line speed, so the
- ability to exploit a full complement of 254 workstations should not be assumed for all cases.)
-
- Q. What is the maximumnumber of LU sessions per gateway?
- A. 254, the same as EE 1.3.
-
- ES Database Manager
- -------------------
- Q. Does the ES Database Manager support Null fields?
- A. If you mean plain NULL fields, these have been supported in every version of OS/2
- Database Manager since V1.0. If you mean NOT_NULL_WITH_DEFAULT fields, support for
- this field type will be added in the next version of ES.
-
- Q. Does an EE 1.x Server support the use of ES clients?
- A. No. Due to changes in the way Remote Data Services works in Extended Services, ES
- database clients cannot access EE 1.x database servers.
-
- Q. Does an ES Database Server support the use of EE 1.x clients?
- A. Yes. EE 1.2 or 1.3 SQLLOO and APPC clients may access shared databases on a LAN, or
- host (via DDCS/2).
-
- Q. What is the maximum number of configurable applications under ES Database Server?
- A. 252, however successful operation in a given environment may depend on other factors,
- such as application load and/or available memory, so the ability to exploit a full complement
- of 252 applications should not be assumed for all cases.
-
- LAN Server 2.0
- --------------
- Q. Does LS 2.0 do mirroring/duplexing of drives?
- A. Yes; the OS/2 LAN Server 2.0-Advanced program offers duplexing/mirroring; but not the
- Entry level version.
-
- Q. Have there been any performance enhancements made to LAN Server 2.0?
- A. Yes. LS 2.0 is significantly faster than LS 1.3 for a number of reasons. The Entry
- package includes a much improved LAN transport, at a lower price than 1.3. In addition to
- faster LAN transport, the Advanced package includes HPFS386 (32-bit). As a result, the
- Advanced package is 2-5 times faster than LS 1.30.1 for server functions, and 1.1 to 2.5
- times faster for requester activity. The superior performance of the Advanced package is
- particularly evident in heavy workload environments, such as the remote IPL of OS/2
- Requesters.
-
- Q. Does LAN Server 2.0 support the IBM Token-Ring 16/4 Busmaster Server Adapter/A, unlike
- LAN Server 1.x?
- A. Yes.
- -------------------------------------------------------------------------------
- Thank you for calling the OS/2 2.0 Support Line. Regarding the problem
- reported to the Support Line, we feel that this information may assist
- you in resoloving your problem. If you still require assistance, please
- call 1-800-237-5511, and reference your customer number and problem (PMR)
- number. Your Problem Record Number (PMR) should appear on the cover
- page of this faxed document.