Microsoft KB Archive/72890

= Uninstall Hangs at 7% Complete from &quot;Bloody&quot; Virus =

Article ID: 72890

Article Last Modified on 9/30/2003

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APPLIES TO


 * Microsoft MS-DOS 5.0 Standard Edition
 * Microsoft MS-DOS 5.0a

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This article was previously published under Q72890



SUMMARY
The MS-DOS 5 Upgrade Setup program may hang at 7% complete if a virus is present on the computer. To work around this problem, boot from an original MS-DOS floppy disk.



MORE INFORMATION
This problem has been observed in two specific situations:


 * Setup hangs if the Bloody virus is present on the hard drive. The Bloody virus installs itself in memory, infects the boot sector of a floppy disk and the partition table of the hard disk. After approximately 128 reboots, the virus displays the message &quot;Bloody! Jun. 4,1989&quot; during bootup. The message refers to the date of the Tiananmen Square massacre in Beijing, China.
 * Setup hangs if the Stoned virus is present. The Stoned virus can corrupt system or overlay files, including *.COM files such as the COMMAND.COM.

In both situations, the solution is to boot from an original MS-DOS floppy disk, then run Setup again. Write-protect the original MS-DOS floppy disk so that it does not get infected with any viruses.

This work around may enable MS-DOS 5 Upgrade to complete the installation program. Use virus checking software as soon as possible to eliminate any potential viruses.

Additional query words: 5.00 5.00a

Keywords: KB72890

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