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Microsoft KB Archive/103557

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Knowledge Base


HIMEM.SYS Fails to See More than 64 MB on EISA Machine

Article ID: 103557

Article Last Modified on 12/5/2003



APPLIES TO

  • Microsoft MS-DOS 4.01 Standard Edition
  • Microsoft MS-DOS 5.0 Standard Edition
  • Microsoft MS-DOS 5.0a
  • Microsoft MS-DOS 6.0 Standard Edition
  • Microsoft MS-DOS 6.2 Standard Edition
  • Microsoft MS-DOS 6.21 Standard Edition
  • Microsoft Windows 3.1 Standard Edition
  • Microsoft Windows 3.11 Standard Edition
  • Microsoft Windows for Workgroups 3.1



This article was previously published under Q103557

SYMPTOMS

Versions of HIMEM.SYS earlier than 3.10 may not recognize more than 64 megabytes (MB) of memory on EISA bus computers.

CAUSE

This is because HIMEM.SYS does not recognize EISA memory blocks that start between 64 MB and 65 MB. On these machines, HIMEM.SYS only sees 64 MB of memory.

NOTE: MS-DOS 6.2 and Windows for Workgroups version 3.11 provide HIMEM.SYS version 3.10.


Additional query words: 6.0 5.0 5.00 5.00a 3.1

Keywords: KB103557