KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q98524: HIMEM.SYS Can Access Only 16 Megabytes on an IBM PS/2

Article: Q98524
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:6.0,6.2,6.21,6.22; WINDOWS:3.1,3.11
Operating System(s): 
Keyword(s): 
Last Modified: 21-NOV-1999

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft MS-DOS operating system versions 6.0, 6.2, 6.21, 6.22 
- Microsoft Windows versions 3.1, 3.11 
- Microsoft Windows for Workgroups versions 3.1, 3.11 
-------------------------------------------------------------------------------

SUMMARY
=======

If HIMEM.SYS can access only 16 megabytes (MB) of memory on a IBM PS/2 that has
more than 16 MB of memory installed, you may need an updated PS/2 reference
disk. This situation applies only to versions of HIMEM.SYS that support more
than 16 MB of memory (versions 3.07 and later).

MORE INFORMATION
================

According to IBM Technical Support, you should use the following procedure to
determine if a new reference disk is required:

1. Boot your computer from the reference disk.

2. Select "Set Configuration."

3. Select "View Configuration."

4. Under the "Total System Memory" heading, compare the "Installed Memory" and
  the "Usable Memory" values. If the "Installed Memory" amount is correct (20
  MB, 24 MB, and so forth) but the value for "Usable Memory" is 16 MB, an
  updated reference disk is probably required.

NOTE: IBM recommends that before you obtain the updated reference disk, you first
run the diagnostics to make sure there is not a hardware problem.

You can download the updated reference disk from the NSC bulletin board service
(BBS) at (919) 517-0001. For more information, call IBM at (800) 426-9397.

The products included here are manufactured by vendors independent of Microsoft;
we make no warranty, implied or otherwise, regarding these products' performance
or reliability.

Additional query words: 6.22 6.00 6.20 3.10 3.11 3.09 3rdparty

======================================================================
Keywords          :  
Technology        : kbAudDeveloper kbWin3xSearch kbWFWSearch kbZNotKeyword3 kbWin310 kbWin311 kbWFW310 kbWFW311 kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620 kbMSDOS600
Version           : MS-DOS:6.0,6.2,6.21,6.22; WINDOWS:3.1,3.11

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.