DOCUMENT:Q104733 18-NOV-1999 [msdos] TITLE :ScanDisk /CHECKONLY Mode on Third-Party Compressed Disks PRODUCT :Microsoft Disk Operating System PROD/VER:MS-DOS:6.2,6.21,6.22 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- 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 / while is running. To check for disk problems without fixing them, type SCANDISK /CHECKONLY at the command prompt. where is AUTOFIX or CUSTOM and 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 1999.