The information in this article applies to:
- Microsoft Windows operating system versions 3.1, 3.11
SUMMARY
This article discusses using OnTrack's Disk Manager version 5.1 with
Microsoft Windows version 3.1.
MORE INFORMATION
Compatibility with SmartDrive version 4.0
According to OnTrack Technical Support, Disk Manager version 5.1 is
compatible with SmartDrive version 4.0, although there may be some problems
using it with SmartDrive's Double_Buffer command, depending upon your
hardware configuration:
- System with no SCSI adapter
OnTrack recommends removing the DEVICE=C:\WINDOWS\SMARTDRV.EXE
/DOUBLE_BUFFER line in the CONFIG.SYS on all systems that do not
have a SCSI host adapter.
- System with a SCSI adapter, but no drives with more than 1024 cylinders
OnTrack recommends adding the line DEVICE=C:\WINDOWS\SMARTDRV.EXE
/DOUBLE_BUFFER+ in order to support partitions larger than 32 MB
with MS- DOS versions 3.3 and earlier. If the plus sign is omitted,
SmartDrive will fail.
- System with a SCSI adapter and drives with more than 1024 cylinders
OnTrack recommends removing the SmartDrive DEVICE= statement (even
if it is using the Double_Buffer command) in the CONFIG.SYS file on
all systems with a SCSI adapter and drives with more than 1024
cylinders. It should be noted that with this configuration Windows
will not run in 386 enhanced mode.
Compatibility with Windows 3.1 Swap Files
According to OnTrack, Disk Manager 5.1 is compatible with Windows 3.1
swap files but you may be prevented from creating a permanent swap
file in the following situations:
- Head or sector-per-track mismatch (unless IDE)
If the number of heads and sectors per track specified by your CMOS
drive type entry does not match the actual number of heads and
sectors per track of your drive, your configuration prevents the
use of a permanent swap file. Resolving this conflict requires that
you reinstall your drive and will likely result in lost disk space.
If you must use a permanent swap file, OnTrack Technical Support
can provide suggestions on reconfiguring your system to allow it.
- Large partitions with MS-DOS version 3.3 and earlier
If you are using MS-DOS 3.3 or earlier and have a partition larger
than 32 MB, you cannot use a permanent swap file. To use a
permanent swap file with your system, you must either upgrade to
MS-DOS 4.0 or later and reinstall your system or make all
partitions 32 MB or less and reinstall with your current version of
MS-DOS.
- Drives with more than 1024 cylinders
Permanent swap files can be accessed by Windows only if they are
created within the first 1024 cylinders of your drive. Make sure
you create your swap file on a partition that contains 1024
cylinders or less. Otherwise, Windows will issue a corrupt swap
file error when started. If you have a drive with more than 1024
cylinders, you need to manually enable permanent swap file support
by modifying the DMDRVR device statement in your CONFIG.SYS file to
include a /P option as shown below:
device=c:\dmdrvr.bin /p
If you have problems with corrupt swap file errors when using the /P
option, it is likely that your drive partition is not located within
the first 1024 cylinders.
For additional information, call OnTrack Technical Support.
Disk Manager is manufactured by OnTrack Systems, a vendor independent
of Microsoft; we make no warranty, implied or otherwise, regarding
this product's performance or reliability.