Microsoft KB Archive/104733

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Article ID: 104733

Article Last Modified on 11/18/1999


  • Microsoft MS-DOS 6.2 Standard Edition
  • Microsoft MS-DOS 6.21 Standard Edition
  • Microsoft MS-DOS 6.22 Standard Edition

This article was previously published under Q104733


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


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: KB104733