Sperry XT Will Not Start from Hard Drive or Floppy Disk (74820)

The information in this article applies to:
    Microsoft MS-DOS operating system 5.0
    Microsoft MS-DOS operating system 5.0a
    Microsoft MS-DOS operating system 6.0
    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 Q74820


After installing Microsoft MS-DOS version 5.0, Sperry XT computers will not start from the hard disk, will not start from the Uninstall disk, and if started under a previous DOS version, a DIR command will display only random ASCII characters on the hard disk.


Upgrading the ROM BIOS to version 1.58 may correct this problem.


To obtain the latest XT ROM BIOS version (4.71), contact Sperry at (800) 448-1424, and choose option 4. You will be asked for the BIOS feature appropriate to the specific machine. To determine the BIOS feature of your machine, look on the back by the serial number for a TYPE CODE. If this code is
   T3070-08, then ROM feature type (part no.) is F5083-02.
   T3070-00, then ROM feature type (part no.) is F5083-00.
   T3070-02, then ROM feature type (part no.) is F5083-01.
The product included here is manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

Modification Type: Major Last Reviewed: 5/10/2003
Keywords: KB74820