Difference Between DBLSPACE /CHKDSK and CHKDSK (93599)
The information in this article applies to:
• Microsoft MS-DOS operating system 6.0
This article was previously published under Q93599
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.
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.
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