Q103544: DIR /C Fails to Report File Compression Ratio

Article: Q103544
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:6.0,6.2,6.22
Operating System(s): 
Keyword(s): 
Last Modified: 22-NOV-1999

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The information in this article applies to:

- Microsoft MS-DOS operating system versions 6.0, 6.2, 6.22 
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SUMMARY
=======

This information applies to both Microsoft DoubleSpace and Microsoft DriveSpace.
For MS-DOS 6.22, use DRVSPACE in place of DBLSPACE for commands and filenames.

The DIR /C command does not report a compression ratio for a file if one of the
following is true:

- The Microsoft DoubleSpace FAT (MDFAT) is damaged.

- The file is open in another Windows virtual machine (VM), and the MDFAT has
  not been updated.

- The file was created by Microsoft Backup (or Microsoft Backup for Windows).

To work around this problem, check the file compression ratio in File Manager or
run ScanDisk.

NOTE: The fact that a file does not have a compression ratio does not affect the
ability of DoubleSpace to calculate an actual compression ratio (ACR) for the
whole drive.

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


Additional query words: MWBackup 6.00 6.20

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Keywords          :  
Technology        : kbMSDOSSearch kbMSDOS622 kbMSDOS620 kbMSDOS600
Version           : MS-DOS:6.0,6.2,6.22

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