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-
- The July 1989 information released by Microsoft Product Support
- Services was based on some user feedback on problems with Windows /286
- and Windows /386 V 2.1x that did not result in data loss or corruption.
-
- Windows 3.0 went through a very extensive beta test with users and
- developers. The SMARTDrive problem we have (described in detail below)
- was not encountered in this beta test. Microsoft concluded that this
- is because the majority of our beta testers were in corporate sites
- which tend to use hard disk systems that are supported by the system
- bios as well as use of versions of MS or PC DOS which support large
- partitions.
-
- The following notice was recently placed on Compuserve in the Windows
- forum and was provided to the industry press to alert users that may be
- affected by this SMARTDrive problem to the conditions necessary for
- problems to occur.
-
- * Microsoft Windows and third-party hard disk partitioning software
-
- The Microsoft Windows development team, working closely with several
- hardware and software vendors, has identified two rare scenarios that
- might result in loss or corruption of data. The scenarios involve using
- third-party disk-partitioning software with Microsoft's SMARTDrive disk
- caching utility. We have shipped several hundred thousand copies of
- Windows 3.0 and have only 12 customers with verified problems.
-
- Microsoft Windows 3.0 itself works fine on these systems. The conflict
- arises between the disk caching utility included with Windows called
- "SmartDrive" and the listed third-party disk- partitioning software.
- Windows 3.0 is fully functional without the optional disk caching
- utility.
-
- ** SYSTEMS THAT MIGHT BE AT RISK
-
- *** Scenario 1
-
- Your system IS at risk if:
-
- * You are using THIRD-PARTY disk positioning software, such as those
- listed below AND
-
- * A hard disk on your system has more than 1024 cylinders, AND
-
- * You are using Microsoft Windows' SMARTDrive disk caching utility
-
- This scenario can only occur if you are running third-party disk
- partitioning software, because the DOS Fdisk partitioning software does
- not support disks that have more than 1024 cylinders.
-
- *** Scenario 2
-
- Your system MIGHT be at risk if:
-
- * You are using THIRD-PARTY disk positioning software, such as those
- listed below AND
-
- * Your system contains a hard disk whose type is not directly
- supported by the system's ROM BIOS AND
-
- * You are using Microsoft Windows' SMARTDrive AND
-
- * You are using DOS version 3.30 or higher
-
- The risk probability is greater if your system was customized with
- off-the-shelf parts. Name brand computers ship with ROM BIOS versions
- that support the hard drives installed by the manufacturer.
-
- ** DETERMINING THE RISK
-
- Below is a list of known disk partitioning systems which when used in
- conjunction with SMARTDrive pose a risk.
-
- Each software package uses a device= line in the CONFIG.SYS file in
- your root directory. The device= entry tells your system that the
- software exists.
-
- Open your CONFIG.SYS file with any text editor and see if one of the
- following device= lines exists:
-
- SOFTWARE: Disk Manager from Ontrack Computer Systems
- CONFIG.SYS device=DMDRVR.BIN
-
- SOFTWARE: SpeedStor from Storage Dimensions
- CONFIG.SYS: device=SSTOR.SYS or device=HARDRIVE.SYS
-
- SOFTWARE: InnerSpace from Priam Systems
- CONFIG.SYS: device=EDVR.SYS
-
- SOFTWARE: Vfeatures Deluxe from Golden Bow Systems
- CONFIG.SYS: device=FIXT_DRV.SYS
-
- NOTE: Microsoft DID provide a procedure for using Disk Manager to
- diagnose the risk. Use that procedure if you have Disk Manager by
- Ontrack.
-
- ** REMOVING THE RISK
-
- If you've identified your system at risk, you can either remove
- SMARTDrive or repartition your hard disk using the DOS Fdisk utility
- instead of third part disk partitioning software.
-
- To remove SMARTDrive from your system:
-
- 1. Open your CONFIG.SYS file with any text editor.
-
- 2. Delete this line: device=smartdrv.sys
-
- 3. Save the changes to CONFIG.SYS.
-
- 4. Press CTRL+ALT+DEL to reboot your system (or turn off your system
- and then turn it back on).
-
- Mr Abel stated that Microsoft was working on making SMARTDrive aware of
- these disk partitioning packages, and would provide a free update to
- affected users in the near future.
-
- If you have additional questions, contact Microsoft Product Support at
- (206) 454-2030.
-
- * IF YOU USE DISK MANAGER
-
- The following procedure applies to Disk Manager users only. Use it to
- determine if your system is at risk.
-
- To determine if you have a hard drive with more than 1024 cylinders:
-
- 1. At the DOS prompt, invoke Disk Manager in manual mode by typing
- "DM /M".
-
- 2. Type "C": to display the disk configuration.
-
- 3. If any of the disks displayed have an Actual Cylinder Count over
- 1024, you are at risk when using SMARTDrive.
-
- To determine if your hard disk is not supported in the system BIOS:
-
- 1. At the DOS prompt, type "VER" to display the version of DOS you are
- running. If it is earlier than version 3.30, you are not at risk.
- Otherwise continue.
-
- 2. At the DOS prompt, invoke Disk Manager in manual mode by typing
- "DM /M".
-
- 3. Type "C" to display the disk configuration.
-
- 4. If the display says Parameters Are Standard, you are not at risk.
- Otherwise, if it says Parameters Are Replaced, continue.
-
- 5. For each disk in your system, compare the Setup Parameters to the
- Actual Parameters displayed. If all of the disks displayed have a Setup
- Head Count which matches the Actual Head Count, and a Setup Sector
- Count which matches the Actual Sector Count, then you are not at risk.
- Otherwise, that drive is referred to as "non- homogeneous", and you
- will need to continue.
-
- 6. From the Disk Manager main menu, type "S" to select the non-
- homogeneous drive.
-
- 7. Type "P" to see the partition table for this drive.
-
- 8. If the drive contains a partition with the Type "DOS", AND one of
- more Type "Write-Read" or "Read-Only" partitions, then you are at risk.
-
- 9. Repeat steps 6 through 8 for each non-homogeneous drive in your
- system.
-
- Again, Microsoft is working on a revised SMARTDrive that will solve
- this problem for affected users and expects to have this available in
- approximately a month. Users who are affected can call Microsoft
- Product Support and be put on a list to receive the revised SMARTDrive
- as soon as it is available.
-
- Mr Abel stated that "Microsoft does not take this problem lightly. It
- is, however very obscure. There is a large quantity of Windows 3.0 in
- user hands today (in excess of 200,000 copies) yet the number of
- reported cases of this problem numbers less than 50. This is not to
- minimize the problem, but rather to put it into perspective as we
- must."
-
- Thanks,
- Rich Abel
- Group Product Manager
- Microsoft Windows
-