Uninstall Err Msg: The Boot Partition on Your Hard Disk...
PSS ID Number: Q104888
Article last modified on 11-02-1993
PSS database name: O_MSDOS

6.20

MS-DOS


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The information in this article applies to:

 - Microsoft MS-DOS operating system version 6.2
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SYMPTOMS
========

When you try to uninstall MS-DOS 6.2, you may receive the following
error message:

   The boot partition on your hard disk does not contain a valid
   MS-DOS boot record. If you have an OS/2 dual boot system you should
   be sure that you are in DOS mode before starting Uninstall.

CAUSE
=====

This error occurs when OS/2 (or other software) has changed the master
boot record (MBR). If this is not the case on your system, the boot
record may be infected with a boot-sector virus, such as FORMS.

WARNING: Do not uninstall if you have changed your partitioning. Since
Uninstall does not detect if your partitioning has changed, it
rewrites the partition table with the one stored on the Uninstall disk
(in the BPB0.DAT file). For this reason, uninstalling after
repartitioning may result in data loss.

RESOLUTION
==========

To determine if you have a boot-sector virus, run Microsoft
Anti-Virus.

Additional reference words: 6.20

Copyright Microsoft Corporation 1993.