HIMEM.SYS Load Problems when Exactly 64K Extended Memory Free PSS ID Number: Q35682 Article last modified on 07-15-1993 PSS database name: O_MSDOS
3.x 4.00
MS-DOS
| The information in this article applies to: |
| - Microsoft MS-DOS operating system versions 3.x and 4.0 |
Summary:
When loading HIMEM.SYS after other extended-memory drivers have allocated all but EXACTLY 64K of extended memory for HIMEM.SYS to use (for the High Memory Area), HIMEM.SYS Version 2.02 erroneously reports the following:
WARNING: The High Memory Area is unavailable
This warning message is not correct; HIMEM does allocate the high-memory area if an application requests it.
Microsoft has confirmed this to be a problem with HIMEM.SYS version 2.02. This problem was corrected in version 2.03.
Additional reference words: 4.0 noupd
Copyright Microsoft Corporation 1993.
