Position of the DOS=HIGH Command in CONFIG.SYS (71705)
The information in this article applies to:
• Microsoft MS-DOS operating system 5.0
This article was previously published under Q71705
When loading Microsoft MS-DOS into high memory, DOS=HIGH and DEVICE
statements for the XMS driver do not have to be the first two entries
in the CONFIG.SYS file.
This information applies to MS-DOS version 5.0.
The DOS=HIGH statement can appear on any line in the CONFIG.SYS file.
After finding the DOS=HIGH statement, MS-DOS loads each device driver
starting at the beginning of the CONFIG.SYS file. When the XMS driver
is loaded, MS-DOS relocates into high memory. Because the device
drivers are loaded in the order they appear in the file, any device
driver that needs XMS memory should appear after the XMS driver.
Only DEVICEHIGH statements in the CONFIG.SYS file that appear after
the XMS driver and the UMB provider will be loaded into the upper
memory area (UMA). When using MS-DOS 5.0 memory management, this means
DEVICEHIGH statements must appear after the HIMEM.SYS and EMM386.EXE
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