Microsoft KB Archive/83583

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Windows 3.1 Does Not Allow Swap File on Stacker Drive

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Q83583

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The information in this article applies to:


 * Microsoft Windows versions 3.0, 3.1, 3.11
 * Microsoft Windows for Workgroups versions 3.1, 3.11

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SUMMARY
Microsoft Windows versions 3.1 and 3.11 and Microsoft Windows for Workgroups versions 3.1 and 3.11 do not allow a temporary or permanent swap file to be set up on a STAC Electronics Stacker drive or a RAMdrive. To illustrate this, follow the steps below:


 * 1) Run the Control Panel.
 * 2) Choose the 386 Enhanced icon.
 * 3) Choose the Virtual Memory button in the 386 Enhanced dialog box.

The Virtual Memory option shows nonstacked drives only.

MORE INFORMATION
With Windows 3.0, you can set up a temporary swap file on a Stacker drive. By default, Windows 3.1 or 3.11 or Windows for Workgroups 3.1 or 3.11 does not allow this. The following two problems occur if you attempt to put a temporary swap file on a Stacker drive in Windows 3.1 or 3.11 or Windows for Workgroups 3.1 or 3.11:


 * Windows cannot be certain how much space is available because of the Stacker compression software.
 * Swap files may fragment the Stacker drive in a short amount of time. If you must use Stacker, use version 2.0. By default, Stacker 2.0 leaves only 1 MB of non-stacked hard drive space available. This is not enough space for a swap file.

Run the Stacker 2.0 SDEFRAG.EXE /G command, and decrease the size of the Stacker drive to free additional non-stacked drive space. For more information on this command, refer to your Stacker manual, or contact STAC technical support.

The following are additional suggestions:


 * 1) Use the SDEFRAG command to make 10 MB of nonstacked hard drive space available.
 * 2) Create a permanent swap file of 6 MB.
 * 3) Leave 4 MB free and point the SET TEMP variable there.

RAMdrive
Setting up a swap file on a RAMdrive is not an efficient use of resources. If you have a software package that requires a swap file, you must use real, uncompressed hard drive space with 512 byte sectors.

The products included here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability. KBCategory: kb3rdparty kbenv

KBSubcategory: win31 winmem

Additional query words: 3.10 RAM drive 1024 SCSI non-stacked stacked non

Keywords : win31

Issue type :

Technology : kbAudDeveloper kbWin3xSearch kbWFWSearch kbWin300 kbWin310 kbWin311 kbWFW310 kbWFW311