Microsoft KB Archive/90784

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Err Msg: Invalid Device Request Reading Drive...

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Q90784

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The information in this article applies to:


 * Microsoft Windows versions 3.1, 3.11

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SYMPTOMS
If you use SuperStor version 1.3 by AddStor with the Microsoft Windows 3.1 SMARTDRV.EXE file, you may receive the following error message:

Invalid device request reading drive c

and your system may stop responding (hang).

CAUSE
SuperStor loads a device driver called SSTORDRV.SYS in the CONFIG.SYS file, and optionally loads DEVSWAP.COM, which swaps the physical drive letter for the compressed drive.

Versions of SuperStor earlier than 1.3h do not work with SMARTDrive version 4.0. When SMARTDrive loads, it &quot;unloads&quot; the SuperStor driver, making the compressed drives unavailable. Versions 1.3h and 1.3i correct this problem.

WORKAROUND
To work around this problem, use the following steps:


 * 1) Restart your computer with a bootable floppy disk in drive A.
 * 2) Create a CONFIG.SYS file on the bootable floppy that contains the SuperStor driver, SSTORDRV.SYS.
 * 3) Restart your computer again using the bootable floppy disk in drive A. This should allow you to access the compressed volume of your SuperStor drive.
 * 4) Open the AUTOEXEC.BAT file in a text editor and remove the SMARTDRV.EXE line.

MORE INFORMATION
SuperStor is a disk-compression program, similar to Stacker, that can increase the storage capacity of hard, floppy, and virtual disks. SuperStor is manufactured by AddStor, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

Additional query words: 3.10 system disk add store super stor

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Issue type :

Technology : kbWin3xSearch kbWin310 kbWin311