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Q75837: Using BACKUP/F After Installing the MS-DOS 5 Upgrade

Article: Q75837
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:5.0
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 version 5.0 
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SUMMARY
=======

After installing the Microsoft MS-DOS 5 Upgrade, the BACKUP command can return
the message "Incorrect DOS version" if you try to format a disk during the
backup procedure using the /f[:size] parameter.

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

BACKUP can appear to work correctly for the first few disks, but when the BACKUP
command tries to back up the OLD_DOS.X directory it attempts to use the older
version of FORMAT.COM.

To correct the problem, remove or rename all old FORMAT.COM files from your
computer OR delete the OLD_DOS.X directory using DELOLDOS.EXE.

To find all occurrences of FORMAT.COM, type the following from the root
directory:

  " DIR/S FORMAT.COM " (without the quotation marks)

More information on the BACKUP command can be found in the "Microsoft MS-DOS
User's Guide" on pages 370-373.

Additional query words: 5.00

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Keywords          :  
Technology        : kbMSDOSSearch kbMSDOS500
Version           : MS-DOS:5.0

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