Microsoft KB Archive/94331

= Disk Error Messages with ASPI2DOS.SYS Device Driver =

Article ID: 94331

Article Last Modified on 11/16/1999

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APPLIES TO


 * Microsoft MS-DOS 6.0 Standard Edition
 * Microsoft MS-DOS 6.2 Standard Edition
 * Microsoft MS-DOS 6.21 Standard Edition
 * Microsoft MS-DOS 6.22 Standard Edition

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This article was previously published under Q94331



SYMPTOMS
ASPI2DOS.SYS is an Adaptec driver for the Adaptec AHA 1520 and AHA 1522 SCSI controllers. If SMARTDrive is used to cache a drive when ASPI2DOS.SYS is installed, you may receive the following error message from the Adaptec controller:

A serious disk error has occurred while writing to drive C.

When you run Microsoft Anti-Virus (MSAV.EXE), you receive the following error message:

Not ready reading (or writing) drive C:

Similar errors may also occur while running Microsoft Defragmenter (DEFRAG.EXE) and Microsoft Undelete (UNDELETE.EXE).

NOTE: The SMARTDrive double-buffer driver does not prevent these errors.



CAUSE
This problem occurs if you use the ASPI2DOS drivers shipped with EZSCSI versions 2.02 and 2.03.



RESOLUTION
This problem was corrected in EZSCSI versions 2.04, 3.0, and later. These are available for free from Adaptec.



MORE INFORMATION
This problem usually occurs during frequent alternating reads and writes by programs such as Microsoft Anti-Virus and SMARTDrive.

Additional query words: 6.22 6.00 6.20 uma double_buffer external

Keywords: KB94331

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