Cannot Restore DoubleSpace-Compressed Backup with MS-DOS 6.22 (148479)
The information in this article applies to:
• Microsoft MS-DOS operating system 6.22
This article was previously published under Q148479
If you back up files with compression using Msbackup.exe or
Mwbackup.exe using MS-DOS 6.0 or 6.2 and you then install MS-DOS 6.22, you may
not be able to restore your compressed backup.
In order to restore the backup, the MS-DOS 6.0 or 6.2
Dblspace.bin file and the Drvspace.mr1 file must be available on your hard
NOTE: When you upgrade MS-DOS 6.0 or 6.2 to MS-DOS 6.22, the
Dblspace.bin file should be left on the hard disk. However, if you install
MS-DOS 6.22 to a clean hard disk, the version of Dblspace.bin from MS-DOS 6.0
or 6.2 is not available. The Drvspace.mr1 file is included with the DoubleSpace
Conversion Kit. For additional information, please see the following article in
the Microsoft Knowledge Base:
DoubleSpace Conversion Kit: Description & How to Obtain
To resolve this problem, Microsoft has made the
Dblspace.bin file from MS-DOS 6.2 available for download.
your compressed backup, follow these steps:
• Install the DoubleSpace Conversion Kit (Dblconv.exe).
• Download the DBL622.EXE file from the Microsoft Download
Center to an empty folder.
• Run the DBL622.EXE file you downloaded in step 2 by typing
dbl622 at the MS-DOS prompt.
• Copy the Dblspace.bin file to the MS-DOS folder.
following file is available for download from the Microsoft Download
additional information about how to download Microsoft Support files, click the
following article number to view the article in the Microsoft Knowledge Base:
119591 How to Obtain Microsoft Support Files from Online Services
Microsoft scanned this file for viruses. Microsoft used the most
current virus-detection software that was available on the date that the file
was posted. The file is stored on security-enhanced servers that help to
prevent any unauthorized changes to the file.
The following file is created when you run Dbl622.exe:
File name Size Date Version
Dblspace.bin 64,246 09/30/93 6.20
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