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Microsoft KB Archive/100425

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Knowledge Base

Recovering DBLSPACE.00n After CHKDSK /F

Article ID: 100425

Article Last Modified on 11/19/1999


  • Microsoft MS-DOS 6.0 Standard Edition

This article was previously published under Q100425


After performing standard troubleshooting for a damaged DoubleSpace compressed volume file (CVF), it may be possible to recover some or all of the information by running CHKDSK /F.


Depending on the severity of the damage, running CHKDSK /F on the affected drive may create .CHK extension files that may be mountable. However, if DBLSPACE.00n is still present, it is likely that the .CHK files are not part of the original CVF. If it is determined that extremely large .CHK file(s) do exist on the affected drive and DBLSPACE.00n is no longer present, do the following:

  1. Rename the .CHK file(s) to DBLSPACE.00n. To do this, type the following at the MS-DOS command prompt and then press ENTER:

    ren c:\file000n.chk c:\dblspace.000

  2. Insert MS-DOS 6.0 Disk 3 (3.5-inch) or Disk 4 (5.25-inch), and type the following at the MS-DOS command prompt, and then press ENTER:

    expand a:dblspace.ex_ c:\dblspace.exe

  3. Remove all floppy disks, reboot, then type the following at the MS-DOS command prompt and press ENTER:

    c:\dblspace /mo=00n

NOTE: Alternatively, you can run DBLSPACE.EXE, choose Mount from the Drive menu, and try to mount C:\DBLSPACE.00n.

Additional query words: tshoot 6.00 double space check disk

Keywords: KB100425