MS-DOS 5.0 or Later May Require a ROM BIOS Upgrade (78597)


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 Q78597

SUMMARY

You may need to upgrade your computer ROM BIOS before installing MS-DOS 5.0 or later. The reasons vary from machine to machine, but they typically involve a bug or incompatibility in the existing ROM BIOS. In such cases, your previous MS-DOS version works because that version works around the bug (usually in OEM specific versions of MS-DOS) or because the previous version of MS-DOS did not require the functionality that is missing or incompatible.
Modification Type:MajorLast Reviewed:5/12/2003
Keywords:KB78597
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