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README.TXT NOTES ON MS-DOS 6.21 ==================== This version of MS-DOS does not support data compression. It differs from MS-DOS 6.2 as follows: * DoubleSpace is not included. * ScanDisk will not run on compressed drives. * The Backup programs do not compress data while backing up. * You cannot use the Backup programs to restore backups made with MS-DOS 6 or 6.2 Backup (unless you disabled the Compress Backup Data option before backing up). To restore backups made with MS-DOS 6 or 6.2, use the backup programs that came with those versions of MS-DOS. This file provides important information not included in the MICROSOFT MS-DOS USER'S GUIDE or in MS-DOS Help. This file is divided into the following major sections: 1. Setup 2. MemMaker, EMM386, and Memory Management 3. Windows 4. Hardware Compatibility with MS-DOS 6.21 5. Microsoft Programs 6. Third-Party Programs If the subject you need information about doesn't appear in this file, you might find it in one of the following text files included with MS-DOS: * OS2.TXT, which describes how to remove and save data on your computer when you replace OS/2 with MS-DOS 6.21. * NETWORKS.TXT, which describes how to update your network software for use with MS-DOS 6.21. For information about features new to MS-DOS 6.21, type HELP WHATSNEW at the command prompt. This file contains the following topics: 1. Setup 1.1 SpeedStor 1.2 Incompatible Hard Disk or Device Driver 1.3 AT&T 6300 Computer 1.4 Toshiba with a Hard RAM Disk 1.5 Tandy with ROM DOS 1.6 Setup displays the "Your computer uses a disk-compression program that is incompatible with Setup" message. 1.7 You deleted files from the directory that Setup needs to install the optional Windows programs. 1.8 Running Setup if Your Computer Uses Windows NT 1.9 Setup detects that your computer has a non-MS-DOS partition or non-MS-DOS files, and your computer uses Windows NT. 1.10 Setup displays the "Your computer uses password protection" screen. 1.11 Setup displays the "Your computer is using an incompatible delete-protection program" screen. 1.12 Setup detects that your computer uses DR DOS. 1.13 Installing MS-DOS on a Drive Other Than C 1.14 Bypassing the Uninstall Disk and Using Default Setup Options 1.15 Installing MS-DOS 6.21 on a System with a CorelSCSI UNI_ASP.SYS Driver 1.16 Installing MS-DOS 6.21 if you have DrivePro or EZ-Drive 1.17 Additional Keyboard and Codepage Support 1.18 Switching Between Modes on Dual-Mode Keyboards 2. MemMaker, EMM386, and Memory Management 2.1 Intel Expanded-Memory Driver (EMM.SYS) 2.2 Running MemMaker on a Computer with PC-NFS 2.3 You have a Super VGA display and want to conserve memory. 2.4 Using MemMaker with IBM LAN 2.5 MemMaker and Adaptec SCSI devices 2.6 Running MemMaker on a computer with PC Tools RAMBoost 2.7 EMM386 detects an error in an application 2.8 MemMaker no longer aggressively scans upper memory by default 3. Windows 3.1 Your computer uses a Windows 3.0 permanent swap file. 3.2 Using compressed floppy disks with Windows File Manager 4. Hardware Compatibility with MS-DOS 6.21 4.1 Compaq EXTDISK.SYS Driver 4.2 Hardcard 4.3 Toshiba 5. Microsoft Programs 5.1 Microsoft Anti-Virus 5.2 Running Microsoft Backup for MS-DOS under Windows 5.3 Backup for Windows stops running at the end of the compatibility test 5.4 Running Microsoft Backup with TI4000 and Gateway NOMAD computers 5.5 MS-DOS 6.21 Backup Cannot Restore 6 or 6.2 Backups 5.6 Microsoft Defragmenter 6. Third-party Programs 6.1 4DOS and NDOS 6.2 Above Board 286 and Above Board Plus Installation Programs 6.3 CodeView 6.4 Colorado Tape Backup 6.5 Fastback Plus 6.6 Norton Desktop for Windows 2.0 6.7 PC Tools 1. SETUP ======== 1.1 SpeedStor ------------- If Setup referred you to this section and your computer has an OS/2 partition created by using the FDISKPM utility in OS/2 2.1, run MS-DOS Setup by typing SETUP /U at the command prompt. If Setup referred you to this section and you have neither OS/2 nor a SpeedStor partition on your computer, see the section "Setup displays the Incompatible Hard Disk or Device Driver screen" in the "Diagnosing and Solving Problems" chapter of the MS-DOS 6 User's Guide. If you do have a SpeedStor partition on your computer, Setup probably referred you to this section for one of the following reasons: * Setup could not find in your CONFIG.SYS file a command for the device driver that supports your SpeedStor partition. If this is the case, add the command line to your CONFIG.SYS file, restart your computer, and run Setup. For more information about adding the command line to your CONFIG.SYS file, see your SpeedStor documentation. * Your CONFIG.SYS file has a DEVICE=HARDRIVE.SYS line in it. If this is the case, carry out the following procedure: 1. Use the EXPAND command to expand and copy the SSTOR.SYS file to your hard disk. Make sure you copy the SSTOR.SYS file to the same path as the HARDRIVE.SYS file. See the PACKING.LST file on Setup Disk 1 for the location of the SSTOR.SYS file on the Setup disks and for instructions on how to expand and copy it to your hard disk. 2. Replace the DEVICE=HARDRIVE.SYS command with a DEVICE=SSTOR.SYS command. For example, if the command that loaded the HARDRIVE.SYS file was DEVICE=C:\SSTOR\HARDRIVE.SYS, you would replace it with DEVICE=C:\SSTOR\SSTOR.SYS. 3. Restart your computer. 4. Make sure you can access your hard disk. 5. Run Setup. 1.2 Incompatible Hard Disk or Device Driver ------------------------------------------- If Setup referred you to this section, and no other section in this file is relevant to your system, you have a partition that is incompatible with MS-DOS 6.21. You must delete the partition from your hard disk. See "Using Fdisk to Configure Your Hard Disk" in the chapter "Diagnosing and Solving Problems" in the MICROSOFT MS-DOS 6 USER'S GUIDE. 1.3 AT&T 6300 Computer ---------------------- If you use an AT&T 6300 computer and your ROM BIOS is version 1.21, contact your vendor for a ROM BIOS upgrade. The ROM BIOS version number is displayed when you start your computer. 1.4 Toshiba with a Hard RAM Disk -------------------------------- These instructions apply to Toshiba models T1200, T1600, T1200XE and T1000LE. To use the hard RAM disk, carry out the following procedure before you install MS-DOS 6.21: 1. Back up your hard RAM disk. 2. Using the Toshiba Setup program, delete the hard RAM disk by allocating zero kilobytes (KB) to it. All data on the hard RAM disk will be lost. 3. Restart your computer 4. Run MS-DOS 6.21 Setup. 5. After Setup is complete, run the Toshiba Setup program to reinstall the hard RAM disk. 6. Run FDISK, change to drive 2, and create a primary DOS partition. Quit FDISK. 7. Use the FORMAT command to format drive D. 1.5 Tandy with ROM DOS ---------------------- Contact your hardware manufacturer for information about upgrading a Tandy computer with ROM DOS to MS-DOS 6.21. This applies to the following models: 1000EX, 1000HX, 1000SL, 1000SL2, 1000TL, 1000TL2, 1000TL3, 1000RL, 1000RLX, 1000RL-HD, 1000RLX-HD, 1100FD, 2500XL, 2500XL2. 1.6 Setup displays the "Your computer uses a disk-compression program that is incompatible with Setup" message. -------------------------------------------------------------- If Setup indicated that your computer has an incompatible disk-compression program, you must remove it manually before you can install MS-DOS 6.21. Contact your disk-compression vendor for an updated version of your software. In most cases, current versions of disk-compression software are compatible with MS-DOS 6.21. Alternatively, you can use the procedure below to remove your current disk-compression software. 1. Back up all the files on your compressed drive. In step 3, you will format your uncompressed drive, which destroys all the files on your compressed and uncompressed drives. 2. If your Setup disks are compatible with drive A, insert Setup Disk 1 in drive A, and restart your computer. After Setup displays the first screen, quit Setup by pressing F3 twice. If your Setup disks are not compatible with drive A, create a startup floppy disk for drive A. To do this, insert Setup Disk 1 in drive B, and a blank floppy disk in drive A. Then type B:SETUP /F at the command prompt. When prompted, choose to install MS-DOS on the floppy disk in drive A. After Setup is finished, leave the disk in drive A, and restart your computer. 3. At the command prompt, type FORMAT C: /S to reformat your startup drive and transfer MS-DOS 6.21 system files to it. 4. Remove the disk from drive A, and restart your computer. 5. Insert Setup Disk 1 in drive A or B, and type A:SETUP or B:SETUP at the command prompt. 6. After Setup is complete, restore the files you backed up. Do not restore older versions of MS-DOS files. 1.7 You deleted files from the directory that Setup needs to install the optional Windows programs. --------------------------------------------------------- If you typed BUSETUP /E at the command prompt, the "Setup did not find the files it needs in the directory specified" message appeared, and you think you deleted the files from your hard disk, insert Setup Disk 1 in drive A or B, and start Setup by typing A:SETUP /E or B:SETUP /E at the command prompt. 1.8 Running Setup if Your Computer Uses Windows NT -------------------------------------------------- If your computer has Windows NT installed, but does not have MS-DOS installed on it, carry out Procedure 1. If your computer has Windows NT and MS-DOS installed on it, carry out Procedure 2. Procedure 1 1. Run Setup by inserting Setup Disk 1 in drive A and restarting your computer. Complete Setup by following the instructions on the screen. When Setup is complete, Windows NT will be disabled. If Windows NT was installed on a FAT partition, complete steps 2 and 3 of this procedure to reenable Windows NT so that you can use both the Windows NT and MS-DOS operating systems. If Windows NT was installed on a non-FAT partition, see section 1.9. 2. Insert your Windows NT Setup disk in drive A or drive B, and then restart your computer. 3. When the Windows NT Setup screen appears, choose Repair, and then insert your Windows NT Emergency Repair Disk (which you created when you installed Windows NT) to repair the Windows NT system files. Procedure 2 1. When you start your computer, choose MS-DOS as your operating system. 2. Run Setup by inserting Setup Disk 1 in drive A or B, and typing A:SETUP or B:SETUP at the command prompt. 1.9 Setup detects that your computer has a non-MS-DOS partition or non-MS-DOS files, and your computer uses Windows NT ---------------------------------------------------------- The procedure you use depends on whether you want to preserve the partition and its files. Find the section below that describes the configuration you want. You Don't Want to Preserve the Partition or its Files ------------------------------------------------------ If you don't want to preserve the partition or its files, choose to remove the partition or files if Setup prompts you to do so. If Setup doesn't offer you that choice, remove the partition manually after Setup is complete. For instructions on removing a non-MS-DOS partition manually, see "Using Fdisk to Configure Your Hard Disk" in the chapter "Diagnosing and Solving Problems" in the MICROSOFT MS-DOS USER'S GUIDE. You Don't Want to Preserve the Partition but Want to Save its Files ------------------------------------------------------------------- If you want to save the data files, but don't want to preserve the partition, back up the files, run Setup again, and then choose to remove the partition or files if Setup prompts you to do so. If Setup doesn't offer you this choice, remove the partition manually after Setup is complete. For instructions on removing the partition manually, see "Using Fdisk to Configure Your Hard Disk" in the chapter "Diagnosing and Solving Problems" in the MICROSOFT MS-DOS 6 USER'S GUIDE. You Want to Preserve the Partition and Its Files ------------------------------------------------ Carry out the following procedure. NOTE If the non-MS-DOS partition takes up all the space on your hard disk, you must reconfigure your hard disk. You can either let Setup do it for you, as described in the preceding section, or reconfigure it yourself manually. For instructions on reconfiguring your hard disk manually, see your Windows NT documentation. To install MS-DOS 6.21 and preserve your partition or files: 1. Run MS-DOS Setup. 2. When prompted, choose to continue Setup without removing the partition or files. 3. After Setup is complete, insert your Windows NT Setup disk in drive A or drive B, and then restart your computer. 4. When the Windows NT Setup screen appears, choose Repair, and then insert your Windows NT Emergency Repair Disk (which you created when you installed Windows NT) to repair the Windows NT system files. 1.10 Setup displays the "Your computer uses password protection" screen. ---------------------------------------------------------------- See section 1.12. 1.11 Setup displays the "Your computer is using an incompatible delete-protection program" screen. --------------------------------------------------------------- See section 1.12. 1.12 Setup detects that your computer uses DR DOS. -------------------------------------------------- If you have DR DOS installed on your computer, take the following precautions before restarting Setup: o If your system has any security features, including password protection, disable them. For more information, see "Setup displays the 'Your computer uses password protection' screen" in the chapter "Diagnosing and Solving Problems" in the MICROSOFT MS-DOS USER'S GUIDE. If you have protected any files or directories with a password, remove the password protection, particularly if you have protected your CONFIG.SYS or AUTOEXEC.BAT files, or your DR DOS directory. o If you have DELWATCH installed on your computer, carry out the procedure "Setup displays the 'Your computer is using an incompatible delete-protection program' screen" in the chapter "Diagnosing and Solving Problems" in the MICROSOFT MS-DOS USER'S GUIDE. o If your CONFIG.SYS or AUTOEXEC.BAT files use any conditional commands-- such as the "?" or GOTO commands--remove them and adjust the order of commands in your startup files accordingly. o If your CONFIG.SYS file uses the CHAIN command, remove it and adjust the order of commands in the file accordingly. o If your computer uses disk compression, but drive C is not compressed, run Setup as described in the chapter "Getting Started" in the MICROSOFT MS-DOS USER'S GUIDE. When Setup displays the "Your CONFIG.SYS file contains commands that are not valid MS-DOS commands" message, choose the "Modify original files" option. If drive C is compressed, carry out the following procedure: 1. Determine which drive is your original uncompressed drive. For more information, see your DR DOS documentation. 2. Make backup copies of the CONFIG.SYS and AUTOEXEC.BAT files on your compressed drive, and the DCONFIG.SYS file on your uncompressed drive. 3. Combine the two configuration files. For example, if drive D is your uncompressed drive, type the following at the command prompt: COPY D:\DCONFIG.SYS+C:\CONFIG.SYS D:\CONFIG.SYS 4. Copy the combined CONFIG.SYS file to drive C. For example, if drive D is your uncompressed drive, type the following at the command prompt: COPY D:\CONFIG.SYS C:\CONFIG.SYS 5. Copy your AUTOEXEC.BAT to your uncompressed drive. For example, if drive D is your uncompressed drive, type the following at the command prompt: COPY C:\AUTOEXEC.BAT D:\AUTOEXEC.BAT 6. Run MS-DOS 6.21 Setup. 7. When Setup displays the "Your CONFIG.SYS file contains commands that are not valid MS-DOS commands" message, choose the "Modify original files" option. When Setup displays the "Because you are currently using the DR DOS operating system" message, choose Continue. 8. After Setup is complete, MS-DOS displays an "Unrecognized command" message on your screen for each command in your AUTOEXEC.BAT and CONFIG.SYS files that is not a valid MS-DOS command. Remove these commands from your CONFIG.SYS and AUTOEXEC.BAT files. 9. Add the DEVICE=HIMEM.SYS command to the beginning of your CONFIG.SYS file, and the restart your computer. 1.13 Installing MS-DOS on a Drive Other Than C ---------------------------------------------- As described in the following procedure, you can install MS-DOS on a drive other than C by using the /M switch to copy the system files to your startup drive and then using the /Q switch to copy your MS-DOS files to a different drive. NOTE This procedure is designed for advanced users. If your computer uses disk-compression software, modify the procedure as appropriate. NOTE If your computer uses disk-partitioning software, such as Disk Manager, SpeedStor, Priam, or Everex, do not carry out the procedure until you have carried out steps 1 through 3 of "You need to install MS-DOS manually" in the chapter "Diagnosing and Solving Problems" in the MICROSOFT MS-DOS USER'S GUIDE. If your software uses a driver to enable the drive on which you want to install MS-DOS, make sure you create a startup disk with the driver in a CONFIG.SYS or AUTOEXEC.BAT file. After you have carried out these steps, skip to step 3 of the following procedure. 1. Run Setup by inserting Setup Disk 1 in drive A or B, and typing A:SETUP /M or B:SETUP /M at the command prompt. NOTE Your CONFIG.SYS and AUTOEXEC.BAT files were saved as CONFIG.NEW and AUTOEXEC.NEW. 2. Run Setup by inserting Setup Disk 1 in drive A or B, and typing A:SETUP /Q or B:SETUP /Q at the command prompt. Follow the instructions on your screen. 3. When Setup displays the system settings screen, choose the MS-DOS Path option. Type the drive and directory where you want to install MS-DOS, and press ENTER. Continue Setup. 4. After Setup is complete, open your CONFIG.NEW and AUTOEXEC.NEW files and ensure that their commands specify the correct path. Save the files as CONFIG.SYS and AUTOEXEC.BAT. Then restart your computer. 1.14 Bypassing the Uninstall Disk and Using Default Setup Options ----------------------------------------------------------------- To keep Setup from creating an Uninstall Disk, use the /G switch with the Setup command. To bypass the Uninstall disk and use default Setup options instead of choosing them yourself, use both the /H and /G switches with the Setup command. WARNING The primary purpose of the Uninstall disk is to safeguard your files during and after Setup. If Setup doesn't create an Uninstall disk, you will not be able to restore your previous version of DOS. If Setup should render your hard disk inaccessible, you will not be able to use the Uninstall disk to make it accessible again. NOTE If you have a version of MS-DOS earlier than 5.0, and you use the /G switch or the /H and /G switches together, Setup will not prompt you if you need to update your network files. 1.15 Installing MS-DOS 6.21 on a System with a CorelSCSI UNI_ASP.SYS Driver -------------------------------------------------------------------------- If your system uses the CorelSCSI UNI_ASP.SYS device driver for optical drives, and Setup stops running when you try to install MS-DOS 6, delete the DEVICE command in your CONFIG.SYS that loads the Corel UNI_ASP.SYS driver. Then run Setup again. After Setup is complete, reinstall the Corel UNI_ASP.SYS driver as you originally installed it. If you continue to have problems, contact Corel Customer Service. 1.16 Installing MS-DOS 6.21 if you have DrivePro or EZ-Drive ------------------------------------------------------------ If your hard disk was set up using Micro House DrivePro(TM) or EZ-Drive(TM), you must carry out one of the following procedures before you can install MS-DOS 6.21. o If your DrivePro or EZ-Drive floppy disks include the DOS6INST.EXE file, run the DOS6INST program and follow the instructions on the screen. (This program is also available on the Micro House BBS at (303) 443-9957.) o If you don't have the DOS6INST program, run the MHDRIVE program (if you have DrivePro) or the EZ-RESET program (if you have EZ-Drive). Press ENTER to accept the default answers until the program prompts you to insert MS-DOS Setup Disk 1. Insert the disk and then press ENTER. At the second Setup screen, choose "Continue Setup and replace your current version of DOS." (Note that this procedure will replace your current CONFIG.SYS and AUTOEXEC.BAT files with basic versions of these files.) For additional information, or if you encounter problems, contact Micro House Technical Support. 1.17 Additional Keyboard and Codepage Support ---------------------------------------------- MS-DOS 6.21 includes the KEYBRD2.SYS and EGA2.CPI files, which offer additional keyboards and codepages. You use these files just as you would the KEYBOARD.SYS and EGA.CPI files. MS-DOS also includes new country settings in COUNTRY.SYS. The KEYBRD2.SYS file is essentially similar to KEYBOARD.SYS. The differences between KEYBOARD.SYS and KEYBRD2.SYS are: o KEYBRD2.SYS contains support for the following keyboards, which are not supported by KEYBOARD.SYS: Country/Language Keyboard layout Keyboard ID ---------------- --------------- ----------- Canada (standard CAN/CSA-Z keyboard) cf 243.200-92 Brazil (secondary standard keyboard) br 274, 275 Greece gk 319 Iceland is 161 Romania ro 333 Turkish tr 440, 179 o The KEYBRD2.SYS file does not include support for the following keyboards supported by KEYBOARD.SYS: Switzerland (German) Switzerland (French) Japan o The KEYBRD2.SYS file provides access to a few keyboards by keyboard layout (two-letter code) only. KEYBOARD.SYS provides access to these keyboards by either keyboard layout or keyboard ID. The affected keyboards are: Poland Czechoslovakia (Czech) Czechoslovakia (Slovak) Yugoslavia Hungary o KEYBRD2.SYS contains changes to the German keyboard that are not in KEYBOARD.SYS. In the German keyboard, the SHIFT lock behavior of the top row of the keyboard now remains unaffected, and is now functionally the same as the US keyboard (that is, "typewriter mode" has been removed). The EGA2.CPI file is similar to the EGA.CPI file, except that the two files contain different code pages. EGA2.CPI contains the following: 850 - Multilingual (in both EGA2.CPI and EGA.CPI) 852 - Eastern European (in both EGA2.CPI and EGA.CPI) 857 - Turkish 861 - Icelandic 869, 737 - Greek MS-DOS 6.21 includes new country settings in COUNTRY.SYS that use the new keyboards and code pages. COUNTRY.SYS contains the following countries with their supported code pages: Country or language Country Character sets code ------------------------------------------------------ Greece 030 869, 737 Iceland 354 861, 850 Romania 040 852, 850 Turkish 090 857, 850 You use the KEYBRD2.SYS and EGA2.CPI files just as you would KEYBOARD.SYS and EGA.CPI. These files can be used in any combination. For example, to use the new Icelandic settings, carry out the following steps: 1. Add the following commands to your AUTOEXEC.BAT file: REM ICELAND SETTINGS MODE CON CP PREPARE=((861) C:\DOS\EGA2.CPI) MODE CON CP SELECT=861 KEYB IS,,C:\DOS\KEYBRD2.SYS 2. If you also need support for codepage 850 (Multilingual), add the following commands to your CONFIG.SYS file: REM ICELAND SETTINGS COUNTRY=354,861,C:\DOS\COUNTRY.SYS DEVICE=C:\DOS\DISPLAY.SYS CON=(,,2) Add the following commands to your AUTOEXEC.BAT file: REM ICELAND SETTINGS NLSFUNC MODE CON CP PREPARE=((861,850) C:\DOS\EGA2.CPI) MODE CON CP SELECT=861 KEYB IS,,C:\DOS\KEYBRD2.SYS 3. Restart your computer. 1.18 Switching Between Modes on Dual-Mode Keyboards ---------------------------------------------------- MS-DOS 6.21 includes dual-mode keyboard support for Greek and French Canadian keyboards. These keyboards allow you to easily switch between two different keyboard modes. When your computer starts with the Greek or French Canadian keyboard, the primary mode is active. To switch modes, press the appropriate key combination (listed below). The key combinations for the Greek keyboard are as follows: Mode description Key combination ---------------- --------------- Primary mode Latin ALT+RIGHT SHIFT Secondary mode Greek ALT+LEFT SHIFT The key combinations for the French Canadian keyboard are as follows: Mode description Key combination ---------------- --------------- Primary mode Latin CTRL+RIGHT SHIFT Secondary mode Latin II CTRL+LEFT SHIFT 2. MEMMAKER AND MEMORY MANAGEMENT ================================= 2.1 Intel Expanded-Memory Driver (EMM.SYS) ------------------------------------------ If you use Intel's EMM.SYS driver with Aboveboard, use EMM.SYS version 4.0 revision E if you an ISA system, or EMM.SYS version 4.0 revision D if you have an MCA or other system. Contact Intel for a free upgrade. 2.2 Running MemMaker on a Computer with PC-NFS ---------------------------------------------- If you use PC-NFS network software, carry out the following procedure before you run MemMaker: 1. Open your MEMMAKER.INF file by using any text editor. This file is in the directory that contains your MS-DOS files. 2. Add the following line to the file: *NET 3. Save the file, and then run MemMaker. 2.3 You have a Super VGA display and want to conserve memory. ------------------------------------------------------------- If you use Microsoft Windows on an 80386 computer with extended memory and a Super VGA display, you can use the MONOUMB.386 file, in conjunction with MemMaker, to conserve conventional memory for running programs. To conserve memory if you have a Super VGA display: 1. Open your Windows SYSTEM.INI file, and find the [386Enh] section. 2. Add a DEVICE command for the MONOUMB.386 file, which is located in your MS-DOS directory. For example, if your MS-DOS files are in C:\DOS, add the following line to this section: DEVICE=C:\DOS\MONOUMB.386 3. Save the file, and restart your computer. 4. After your computer starts, run MemMaker by typing MEMMAKER at the command prompt. 5. Choose Custom Setup. On the Advanced Options screen, answer Yes to the question "Use monochrome region (B000-B7FF) for running programs?" Follow the instructions on your screen. 2.4 Using MemMaker with IBM LAN ------------------------------- Before you run MemMaker, you might need to make adjustments to the parameters specified for your IBM LAN support driver, DXMC0MOD.SYS. In your CONFIG.SYS file, make sure that the DEVICE command that loads DXMC0MOD.SYS includes one of the following before you run MemMaker: o The first three parameters, as in the following example: DEVICE=C:\DXMC0MOD.SYS 400000000001,D800,1 o No parameters, as in the following example: DEVICE=C:\DXMC0MOD.SYS o Some parameters and enough commas to fill in the first three parameters, as in the following example: DEVICE=C:\DXMC0MOD.SYS 400000000001,, 2.5 MemMaker and Adaptec SCSI devices ------------------------------------- MemMaker is compatible with Adaptec SCSI devices. However, if you use the ASPI4DOS.SYS driver to support your SCSI device, MemMaker by default will exclude this driver from the optimization process. If you don't use the SCSI device as your startup or boot drive, you can include the ASPI4DOS.SYS driver in the optimization process. To do so, remove the ^ASPI4DOS entry in the MEMMAKER.INF file, and then run MemMaker. 2.6 Using MemMaker on a computer with PC Tools or PC-DOS RAMBoost ----------------------------------------------------------------- You can use MemMaker or RAMBoost with MS-DOS, but not both at the same time. MemMaker will prevent RAMBoost from loading, but not remove its DEVICE= command from your CONFIG.SYS. 2.7 EMM386 detects an error in an application --------------------------------------------- If EMM386 displays a message such as "EMM386 has detected error #12 in an application," this indicates that the processor has reported an exception error to EMM386. An exception error typically occurs when an application gives the processor an instruction under invalid or unexpected conditions. In most cases, these errors are related to a specific program. If you are receiving an error that does not occur with any particular application, the error might be caused by a device driver or a memory-resident (terminate-and-stay-resident) program. To avoid these errors: o Try to identify the program involved. One way to do this is to see if the error occurs when the program is not running. If you suspect a memory-resident program or device driver, try bypassing it when your computer starts. o Try disabling EMM386. If a particular application is to blame, disabling EMM386 might allow that application to generate an error message. Disabling EMM386 might also change your memory configuration so that the error no longer occurs. o Try changing the order in which you load device drivers and memory-resident programs. This might help because some errors occur only under specific memory conditions. o If error 12 is occurring, this indicates that a stack is being used incorrectly. Try adding the following command to your CONFIG.SYS file: STACKS=18,512 o If error 13 is occurring, the program may be trying to use protected mode without cooperating with EMM386. You may need to obtain a VCPI-compliant version of the program, or not load EMM386 when using this application. 2.8 MemMaker no longer aggressively scans upper memory by default ------------------------------------------------------------------ By default, the MS-DOS 6.21 version of MemMaker does not scan upper memory aggressively. Instead, the MemMaker option "Scan the upper memory area aggressively?" is set to No, and MemMaker limits its search for available UMBs to memory addresses C600 through EFFF. In contrast, the MS-DOS 6 version of MemMaker did scan upper memory aggressively by default: in addition to scanning memory in the C600-EFFF range, it also scanned addresses in the range F000 through F7FF. To make more memory available for running programs, run MemMaker in Custom mode and change the "Scan the upper memory area aggressively?" option to Yes. (Note that, on some computers, putting UMBs in this range prevents the computer from starting properly.) Note: If you last ran MemMaker with the "Scan the upper memory area aggresively" option set to Yes, then the next time you run MemMaker, it leaves that option set to Yes. 3. WINDOWS ========== 3.1 Your computer uses a Windows 3.0 permanent swap file. --------------------------------------------------------- If your computer uses a Windows 3.0 permanent swap file, run the SPATCH.BAT program to make the swap file compatible with MS-DOS 6. To do so, carry out the following procedure: 1. Copy the SPATCH.BAT file to your hard disk. To determine the location of the file on the Setup disks, view the PACKING.LST file on Setup Disk 1. 2. Type the following at the command prompt: SPATCH [DRIVE]:[PATH]SWAPFILE.EXE For the DRIVE and PATH parameters, specify the location of your SWAPFILE.EXE file. 3. Follow the instructions on your screen. The program modifies the SWAPFILE.EXE for use with MS-DOS 6 and saves a backup copy as SWAPFILE.SAV. After you have confirmed the file works correctly, you can delete the SWAPFILE.SAV file. 3.2 Using compressed floppy disks with Windows File Manager ----------------------------------------------------------- If you are using compressed floppy disks with automounting enabled, you might encounter error messages or other problems while using File Manager. To work around these problems, press the F5 key twice. For example, if you change from a compressed to an uncompressed floppy disk, the drive button for the compressed floppy disk's host drive remains until you press the F5 key twice. 4. HARDWARE COMPATIBILITY WITH MS-DOS ===================================== 4.1 Compaq EXTDISK.SYS Driver ----------------------------- The Compaq EXTDISK.SYS driver version 3.00 or later is compatible with MS-DOS 6. If you have a version earlier than 3.00, contact your vendor for an upgrade. 4.2 Hardcard ------------ a) Hardcard II If you can't use Plus Development Hardcard II or Hardcard II XL when running EMM386.EXE, specify the exclude (x=) switch to prevent EMM386 from conflicting with the card's BIOS address. To configure EMM386, run MemMaker. b) Hardcard 40 or Passport If you are using Hardcard 40 or a Passport removable disk, and you have a DEVICE command in your CONFIG.SYS file for PLUSDRV.SYS, disable or remove the DEVICE command. Then run MS-DOS 6.21 Setup. After Setup is complete, reenable or restore the DEVICE command for PLUSDRV.SYS. Make it the last line in the file. 4.3 Toshiba ----------- If you used the MS-DOS 5.0 version of EMM386 before you ran Setup, and you use the Power Management function, use the VRESUME program or device driver to avoid problems with the Resume feature. Carry out the following procedure: 1. Make sure the VRESUME.COM or VRESUME.SYS file is on your hard disk. To load the TSR, add a command for VRESUME.COM to your AUTOEXEC.BAT file. To load the device driver, add a command for the VRESUME.SYS file to your CONFIG.SYS file. 2. Save the file, and restart your computer. NOTE For information about using VRESUME with Windows 3.0, see the WRESUME.TXT file on your Toshiba MS-DOS 5.0 disks. 5. MICROSOFT PROGRAMS ===================== 5.1 Microsoft Anti-Virus ------------------------ Before cleaning a program file, make sure you have a backup copy of it. If you clean a program file, and the program is corrupted, reinstall the program. If Anti-Virus again detects a virus, there is a chance the detection is in error; contact your software vendor to determine if an updated version of the program is available. 5.2 Running Microsoft Backup for MS-DOS under Windows ----------------------------------------------------- You should not run Backup for MS-DOS while Windows is running. However, if you do, and if your system is not configured correctly, Backup might display the following symptoms: o Backup appears to stop running--for example, the clock runs, but there is no disk activity. o Backup reports problems while testing the second floppy disk during the compatibility test. For example, it might display a "Diskette not properly seated" message or ask for Disk 1 repeatedly. o Windows displays a message that the DMA buffer size needs to be increased. o Backup quits unexpectedly. You can correctly configure your system by carrying out the following procedure. 1. Open your SYSTEM.INI file, and add a DMABufferSize=32 line to the [386Enh] section. 2. When you run Backup, make sure that you specify with the Settings command from the Control menu that Backup run with the Exclusive and Full Screen options. 5.3 Backup for Windows stops running at the end of the compatibility test -------------------------------------------------------------------------- If Backup for Windows stops running at the end of the Compatibility Test, you might be loading an incompatible third-party backup driver in your SYSTEM.INI file. Carry out the following procedure. NOTE This procedure disables your third-party backup program. 1. Open your SYSTEM.INI file, and locate the [386Enh] section. 2. Determine whether any of the following lines are included in this section: DEVICE=FASTBACK.386 DEVICE=VFD.386 DEVICE=CPBVXD.386 DEVICE=VIRWT.386 3. If you find any of these lines, add a semicolon (;) to the front of the line. 4. Save the file, restart Windows, and run Backup for Windows again. 5.4 Running Microsoft Backup with TI4000 and Gateway NOMAD computers --------------------------------------------------------------------- To avoid a conflict between the Turbo feature and Microsoft Backup for Windows or MS-DOS, add a /L0 switch to the DEVICE command in your CONFIG.SYS that loads the BATTERY.PRO file. Or, before you run Microsoft Backup, type SETPOWER /L0 at the command prompt. 5.5 MS-DOS 6.21 Backup Cannot Restore 6 or 6.2 Backups ------------------------------------------------------ The Backup programs included with MS-DOS version 6.21 cannot usually restore backups made with MS-DOS version 6 or 6.2. To restore backups made with the MS-DOS 6 or 6.2 Backup utilities (either the MS-DOS or Windows versions) use the MS-DOS 6 or 6.2 versions of Backup. Backup does successfully restore 6 and 6.2 backups made without data compression. If you unchecked the Compress Backup Data box in the Backup Options dialog before you backed up, you should have no problems restoring your data using the MS-DOS version 6.21 Backup programs. Backup for Windows ------------------ If you try to use MS-DOS 6.21 Backup for Windows to retrieve the catalog of a 6 or 6.2 Backup created using compression, you will see the following error message: The compression header for the catalog is corrupt. Use rebuild to reconstruct the catalog. Backup for Windows will be able to rebuild the catalog, since it does not have to decompress data to do so. However, attempting to restore the backup will probably display one of the following error messages: The file [pathname] could not be properly restored. Do you want to skip this file? or The compression header for the file [pathname] is corrupt. Restore cannot process this file and must stop. In either case, the specified file will not be restored, although other files (which were stored in the backup uncompressed) might have been restored. Use a 6 or 6.2 Backup utility (either the MS-DOS or Windows version) to restore this backup. Backup for MS-DOS ----------------- If you try to use MS-DOS 6.21 Backup for MS-DOS (MSBACKUP) to retrieve the catalog of a 6 or 6.2 Backup created using compression, you will see the following error message: Cannot retrieve catalog (name) on drive (x). You can use Backup for MS-DOS to rebuild the catalog, since it does not have to decompress data to do so. However, attempting to restore the backup data using Backup for MS-DOS will probably display the following error message: Compression failure within file [FILENAME]. The specified file will not be restored, although other files (which were stored in the backup uncompressed) might have been restored. Use a 6 or 6.2 Backup utility (either the MS-DOS or Windows version) to restore this backup. Note: If you try to restore a compressed backup that is located on a drive other than a floppy disk (for example, a network drive or a Bernoulli drive), Backup for MS-DOS will not display any error messages and will simply skip any compressed files. The Restore summary screen lists the files that were skipped. 5.6 Microsoft Defragmenter -------------------------- If you received the "Insufficient Memory" message from Microsoft Defragmenter, use the MEM command to determine how much conventional, upper, and extended (XMS) memory is available. In addition to using all available conventional memory, Defragmenter can make use of up to 384K of extended memory and 12K of upper memory. To increase available memory, carry out the procedures in "An MS-DOS program displays an out-of-memory message" in the chapter "Diagnosing and Solving Problems" in the MICROSOFT MS-DOS USER'S GUIDE. If less than 384K of extended memory is available, carry out the procedures in "Freeing Extended Memory" in the "Making More Memory Available" chapter in the MICROSOFT MS-DOS USER'S GUIDE. 6. THIRD-PARTY PROGRAMS ======================= 6.1 4DOS and NDOS ----------------- 4DOS and NDOS are compatible with MS-DOS 6. However, to use some of the new features in MS-DOS 6.21 (such as MemMaker, the LOADHIGH /L switch, DIR compression switches, and the ability to bypass startup commands), contact JP Software to obtain 4DOS 4.02 or later, or Symantec to obtain Norton Utilities 7.0 or later. If you use multiple configurations, 4DOS or NDOS will not automatically run your AUTOEXEC.BAT file unless you include a /P on the SHELL line in your CONFIG.SYS file. To use MS-DOS 6.21 Help instead of 4DOS or NDOS Help, start it by using COMMAND /C HELP, or define a 4DOS or NDOS alias to run HELP.COM from your MS-DOS 6.21 directory. 6.2 Above Board 286 and Above Board Plus Installation Programs ----------------------------------------------------- Do not use an Above Board installation program dated May 1989 or earlier until you disable programs that use extended memory, such as SMARTDrive or RAMDrive. You might lose data if you leave these programs enabled. After you have installed Above Board, you can reenable these programs. 6.3 CodeView ----------- CAUTION Using versions 3.0 to 3.13 of the CodeView CV.EXE file may cause data loss if your system has an 80386 memory manager (such as EMM386.EXE) and device drivers or programs that use extended memory. To determine which version you have, type CV.EXE at the command prompt. 6.4 Colorado Tape Backup ------------------------ If you receive a message that you have two versions of the VFINTD.386 file loaded, you probably need to edit your SYSTEM.INI file. To do so, carry out the following procedure: 1. Open your SYSTEM.INI file and locate the [386Enh] section. You should see two lines similar to the following: DEVICE=C:\TAPE\CMSDTAPE.386 DEVICE=C:\DOS\VFINTD.386 2. If you plan to use your Colorado Tape Backup program, add a semi- colon (;) before the DEVICE command for the VFINTD.386 file. If you plan to use Microsoft Backup, add a semi-colon before the DEVICE command for the CMSDTAPE.386 file. 3. Save the file, and restart Windows. 6.5 Fastback Plus ----------------- If you have a version of Fifth Generation Systems Fastback Pluse earlier than 3.0, use the LOADFIX command before running Fastback Plus or the Fastback Plus installation program to ensure that you don't lose data. To do so, type the following at the command prompt: LOADFIX FB.EXE or LOADFIX FBINSTAL.EXE 6.7 Norton Desktop for Windows 2.0 ---------------------------------- Setup adds a second Tools menu which contains Microsoft Backup and Antivirus commands. 6.8 PC Tools ------------ If PC Shell does not show all of the files or directories on your drive, quit PC Shell immediately and contact Central Point Software for an update. CAUTION: Do not attempt to use PC Shell on that drive; severe data loss might occur. The FORMAT command of PC Tools version 7.1 conflicts with MS-DOS 6.21. Use the FORMAT command that comes with MS-DOS 6.21.