Above DISC Compatibility with DOS=HIGH or HIMEM.SYS (76182)
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 Q76182
Above DISC uses a driver called ABOVE.EXE to emulate expanded memory
in extended memory or, in some cases, on a hard disk. If ABOVE.EXE is
used with HIMEM.SYS and with DOS=HIGH, or in some cases with just
HIMEM.SYS, the computer may stop responding (hang) on startup, beep
uncontrollably, or continually reboot. ABOVE.EXE may also cause
problems with caching programs (for example, SMARTDRV.SYS) and memory
managers (for example, QEMM).
ABOVE.EXE uses the high memory area (HMA), which is located between
1024K and 1088K in extended memory. HIMEM.SYS also uses the HMA. On
some computers, there is a conflict between HIMEM.SYS and ABOVE.EXE,
especially when MS-DOS is loaded high. This is because HIMEM.SYS loads
MS-DOS into the HMA. Even when MS-DOS is not loaded high, HIMEM.SYS
may not work with ABOVE.EXE.
According to Above Software Technical Support, the following steps may
allow you to work around this problem:
• Run the install program for Above DISC from inside the ABOVE
• Set hardware to normal IO 286/386.
• Under Change Feature, make sure EMS 4.0 is selected with a check
NOTE: This procedure does not work on all computers; some still cannot
work with the DOS=HIGH setting.
According to Above Software, version 4.1b of Above DISC is fully
compatible with MS-DOS 5.0. However, version 4.1c is required for
The products included here are manufactured by vendors independent of
Microsoft; we make no warranty, implied or otherwise, regarding these
products' performance or reliability.
For more information, contact Above Software.
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