Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

◄Notes►
────────────────────────────────────────────────────────────────────────────
 
                                    DOS
 
Specifies that MS-DOS should maintain a link to the upper memory area, load
part of itself into the high memory area (HMA), or both. You can use this
command only in your CONFIG.SYS file.
 
Syntax
 
    DOS=HIGH|LOW[,UMB|,NOUMB]
 
    DOS=[HIGH,|LOW,]UMB|NOUMB
 
Parameters
 
UMB|NOUMB
    Specifies whether MS-DOS should manage upper memory blocks (UMBs)
    created by a UMB provider such as EMM386.EXE. The UMB parameter
    specifies that MS-DOS should manage UMBs, if they exist. The NOUMB
    parameter specifies that MS-DOS should not manage UMBs. The default
    setting is NOUMB.
 
HIGH|LOW
    Specifies whether MS-DOS should attempt to load a part of itself into
    the HMA (HIGH) or keep all of MS-DOS in conventional memory (LOW). The
    default setting is LOW.
 
Related Commands
 
For information about loading a device driver into the upper memory area,
see the <DEVICEHIGH> command.
 
For information about loading a program into the upper memory area, see the
<LOADHIGH> command.
 
                                      ♦