How can I make it use the Colemak keyboard layout?
Run the command:
keyb co
KPDOS v3.0 - Keyboard Layout Pack for DOS codepages
KPDOS contains library files to be used with KEYB. The official FreeDOS tool to make one of the files below to work with one of its possible codepages is MODE.
To use MODE, DISPLAY must already be running.
All the CPI files in this list are the ones available at the CPIDOS
package. The source files can be compiled by KC, which in turn can be included into customized library files by KLIB.More details available on the KC package, which also includes KLIB.
FreeDOS official keyboard layouts, v3.0
This is the list of all the names of the keyboard layouts available for FreeDOS. When the name is in the format zz999, it means that there is a name AND an identifier which MUST be specified otherwise KEYB will load the layout of another keyboard for that country.
...
Layouts available on the KEYBOARD.SYS library file ================================================== Country/Region Name Codepages CPX -------------- ---- --------- ---
...
(Colemak) co 858, 850, 437 EGA
Source http://home.mnet-online.de/willybilly/fdhelp-dos/en/hhstndrd/base/kpdos.htm