KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q104733: ScanDisk /CHECKONLY Mode on Third-Party Compressed Disks

Article: Q104733
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:6.2,6.21,6.22
Operating System(s): 
Keyword(s): 
Last Modified: 18-NOV-1999

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft MS-DOS operating system versions 6.2, 6.21, 6.22 
-------------------------------------------------------------------------------


SUMMARY
=======

If ScanDisk detects Stacker, XtraDrive, SuperStor, or DoubleDisk drivers in
memory, it runs in CHECKONLY mode.

MORE INFORMATION
================

If you run ScanDisk on a system using third-party disk-compression software
without specifying any command-line parameters (or with command-line parameters
that are incompatible with /CHECKONLY), ScanDisk displays the following message

  You cannot use the /<SWITCH_NAME> while <COMPR_SW_NAME> is
  running.
  To check for disk problems without fixing them, type SCANDISK /CHECKONLY at
  the command prompt.

where <SWITCH_NAME> is AUTOFIX or CUSTOM and <COMPR_SW_NAME> is
Stacker, SuperStor, DoubleDisk, or XtraDrive.

Erroneous Error Message with Third-Party Device Drivers
-------------------------------------------------------

The following third-party device drivers cause ScanDisk to erroneously report
that third-party disk-compression software is running:

  Device Driver      Third-Party Product
  -------------      -------------------
  BRIDGE.DRV         SYSGEN external floppy drive
  DISCTEC.SYS        DISCTEC removable hard drive


If you run ScanDisk on a system using third-party disk-compression software and
use command-line parameters that are compatible with /CHECKONLY, no message is
displayed.

To repair problems with your third-party disk-compression software, use the disk
repair utility provided with the product.

ScanDisk also refuses to scan uncompressed disks on systems using third- party
disk-compression software because it detects the disk-compression software by
scanning memory, rather than attempting to detect which drive is compressed.


Additional query words: 6.22 6.20 addstor adstor

======================================================================
Keywords          :  
Technology        : kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620
Version           : MS-DOS:6.2,6.21,6.22

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 1986-2002.