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Microsoft KB Archive/100794

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Knowledge Base


MSBACKUP Fails on DEC or Dell with Logically Swapped Disks

Article ID: 100794

Article Last Modified on 11/24/1999



APPLIES TO

  • Microsoft MS-DOS 6.0 Standard Edition
  • Microsoft MS-DOS 6.2 Standard Edition
  • Microsoft MS-DOS 6.22 Standard Edition



This article was previously published under Q100794

SYMPTOMS

If you have a Digital Equipment Corporation (DEC) or Dell system and you use the BIOS option to logically swap drives A and B, Microsoft Backup and Microsoft Backup for Windows cannot back up or restore files to those drives.

CAUSE

This problem occurs because Microsoft Backup reads from the floppy disk drive through BIOS disk services but writes to the floppy disk drive directly through the I/O ports.

Microsoft Backup can work successfully with logically swapped floppy disk drives that are implemented by physically exchanging the hardware signals.

WORKAROUND

You may be able to work around this situation by using MS-DOS Path as your backup destination.


Additional query words: 6.00 logical msbackup.exe mwbackup.exe ms- dos-based windows-based 6.20

Keywords: KB100794