Cannot Restore DoubleSpace-Compressed Backup with MS-DOS 6.22

Retired KB Content Disclaimer

View products that this article applies to.

This article was previously published under Q148479

Expand all | Collapse all

SYMPTOMS

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.

Back to the top

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 disk.

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:

117806 (http://support.microsoft.com/kb/117806/EN-US/ ) DoubleSpace Conversion Kit: Description & How to Obtain

Back to the top

RESOLUTION

To resolve this problem, Microsoft has made the Dblspace.bin file from MS-DOS 6.2 available for download.

To restore 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.

The following file is available for download from the Microsoft Download Center:

Collapse this imageExpand this image

Download Dbl622.exe now (http://download.microsoft.com/download/dos622/update/2/dos/en-us/dbl622.exe)

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 (http://support.microsoft.com/kb/119591/EN-US/ ) 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.

Back to the top

MORE INFORMATION

The following file is created when you run Dbl622.exe:

   File name      Size     Date       Version
   ------------------------------------------
   Dblspace.bin   64,246   09/30/93   6.20

Back to the top

APPLIES TO

Microsoft MS-DOS 6.22 Standard Edition

Back to the top

kbdownload kbfile kbgraphxlinkcritical kbprb KB148479

Back to the top

Retired KB Content Disclaimer

This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.

Back to the top