DOS tells the DOS kernel how to load itself.
DOS is a CONFIG.SYS / FDCONFIG.SYS command.
dos=high Tells DOS to load itself into high memory (UMA). You must
first load a high memory manager (e.g. FDXMS, HIMEM, HIMEMX).
dos=low Tells DOS to load into conventional memory.
dos=umb Tells DOS to keep a link between UMA and conventional.
dos=noumb Tells DOS not to keep a link between UMA and conventional.
DOS indicates whether the kernel should try to load itself into high
memory (HIGH) or only conventional (LOW), and whether to link upper
memory blocks in with normal memory (UMB) or not (NOUMB).
Note: only one set need be given, ie dos=high and dos=noumb are ok.
Important: if you specify dos=high[,umb|noumb] then you must also
load a high memory manager (first), e.g. (HIMEM), HIMEMX or JEMMEX.
DOS is a command internal to kernel.sys and needs no other file
in order to work.
IN CONFIG.SYS / FDCONFIG.SYS:
Please read this command's lsm file also.
You will find the updated version (internet) here and
the version described in this manual page here.
The lsm file contains information about the name of the programmer,
the download site, and some other command related information.
Copyright © 1998 Jim Hall, updated 2011 by W. Spiegl.
This file is derived from the FreeDOS Spec Command HOWTO.
See the file H2Cpying for copying conditions.