Removing MS-DOS 6 Upgrade After Compressing a Drive (95856)


The information in this article applies to:

  • Microsoft MS-DOS operating system 6.2
  • Microsoft MS-DOS operating system 6.21
  • Microsoft MS-DOS operating system 6.22
This article was previously published under Q95856

SUMMARY

You cannot use the MS-DOS 6 Upgrade Uninstall disk to restore your previous version of MS-DOS if you have compressed any of your hard disk drives with DoubleSpace or a third-party disk-compression program unless you remove all traces of the disk-compression software. If you attempt to restore your previous version of MS-DOS and you have compressed your hard disk drive with DoubleSpace, you receive the following error:
Because you installed DoubleSpace after installing MS-DOS 6, you cannot restore your previous version of DOS.
For MS-DOS 6.22, use DRVSPACE in place of DBLSPACE for commands and filenames.

MORE INFORMATION

If you have compressed you hard disk drive with DoubleSpace and would like to restore your previous version of MS-DOS, query on the following words in the Microsoft Knowledge Base and follow the procedure in the article about removing DoubleSpace and preserving your files:

preserve and doublespace and remove and ms-dos

After you have followed the procedure in the article, restart your computer from the clean hard drive, then place the Uninstall disk in drive A, and type:

a:uninstal

For more information about restoring your previous version of MS-DOS, query on the following words in the Microsoft Knowledge Base:

uninstall and no and disk and old_dos

If you have compressed your hard disk drive with a third-party disk compression program, consult your documentation or contact the manufacture for assistance in removing the software before running Uninstall.
Modification Type:MajorLast Reviewed:11/22/1999
Keywords:KB95856
©2002 Microsoft Corporation. All rights reserved.