DOCUMENT:Q93599 26-NOV-1999 [msdos] TITLE :Difference Between DBLSPACE /CHKDSK and CHKDSK PRODUCT :Microsoft Disk Operating System PROD/VER:MS-DOS:6.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft MS-DOS operating system version 6.0 ------------------------------------------------------------------------------- SUMMARY ======= When you run DoubleSpace with the /CHKDSK switch (for example, type DBLSPACE /CHKDSK) on a DoubleSpace partition, it analyzes the DoubleSpace file allocation table (FAT) for consistency. The DoubleSpace FAT is a separate data structure from the MS-DOS FAT. To check the DoubleSpace FAT and the MS-DOS FAT, you must run both DBLSPACE /CHKDSK and CHKDSK on the DoubleSpace drive. To analyze and repair any problems, add the /F switch to both commands. NOTE: If CHKDSK, or CHKDSK /F, is run on a compressed drive, it automatically runs DBLSPACE /CHKDSK, or DBLSPACE /CHKDSK /F,when finished. If DBLSPACE /CHKDSK is not invoked, check to make sure DBLSPACE.EXE is located in the same directory as CHKDSK.EXE. MORE INFORMATION ================ MS-DOS maintains a data structure for the FAT that maintains a "map" of the disk usage (both files and free space) recording the status of each sector on the disk. When DoubleSpace is installed, it creates its own FAT and maps the MS-DOS FAT to the DoubleSpace FAT. Additional query words: 6.00 double space ====================================================================== Keywords : Technology : kbMSDOSSearch kbMSDOS600 Version : MS-DOS:6.0 ============================================================================= 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.