MS-DOS 5 Upgrade README.TXT: Memory Management (71868)

The information in this article applies to:
    Microsoft MS-DOS operating system 5.0

This article was previously published under Q71868


The following information was taken from the Microsoft MS-DOS 5 Upgrade README.TXT file.



3.1 386MAX (5.11 or Earlier)

If you have used the SETVER command to report a different version
number to a program you are loading into the upper memory area with
386LOAD.COM or MAXHI.COM, also use the SETVER command to report that
number to 386LOAD.COM or MAXHI.COM. For information about the SETVER
command, see Chapter 14 of the "MS-DOS User's Guide and Reference."

The new version number is reported to all programs loaded by

MAXHI.COM programs supplied with versions of 386MAX earlier than 5.0
are incompatible with MS-DOS 5.0.

3.2 All Computers Inc. Expanded-Memory Driver (ALLEMM4.SYS)

Version 2.5 or later of the All Computers expanded-memory driver
(ALLEMM4.SYS) is compatible with MS-DOS 5.0 HIMEM.SYS. Contact All
Computers to get an updated driver.

3.3 Problems Loading into the Upper Memory Area

Some computers with hard disk controllers, specifically bus master DMA
controllers, may not be able to load device drivers or programs into
the upper memory area. Try adding a DEVICE=SMARTDRV.SYS command before
any DEVICEHIGH commands in your CONFIG.SYS file.

3.4 Installing HIMEM.SYS

Setup does not install HIMEM.SYS if another extended-memory manager is
active. If you want to install HIMEM.SYS, copy it to your disk by
doing the following:

1. Check the PACKING.LST file to determine which disk has the
   HIMEM.SY_ file.
2. Use the EXPAND command to expand and copy the file to your hard
   disk. Name the file HIMEM.SYS.

3.5 Intel Expanded-Memory Driver (EMM.SYS)

Use the Intel expanded-memory driver NE or E switch when installing an
Aboveboard driver. See your Aboveboard documentation for more

3.6 Phoenix BIOS and HIMEM.SYS

If your system includes a Phoenix BIOS and MS-DOS 5.0 doesn't work
correctly, try adding a /machine:1 or /machine:8 switch to the
DEVICE=HIMEM.SYS command in your CONFIG.SYS file.


Setup disables the CONFIG.SYS commands that load XMAEM.SYS and
XMA2EMS.SYS. If your system uses both drivers, replace the commands
with a DEVICE=EMM386.EXE command in your CONFIG.SYS file.

If your system includes an XMA card, remove the REM command that
precedes the DEVICE=XMA2EMS.SYS command in your CONFIG.SYS file.

Modification Type: Major Last Reviewed: 11/23/1999
Keywords: KB71868