[oso2k]

With HIMEM.SYS + EMM386.EXE [0][1], you could include or exclude certain memory segments. But, DOS Subsystem for Linux uses non-standard little documented Unreal Mode [2][3] instead of traditional DOS Memory Management.

[0] http://www.mdgx.com/mem6.htm#6

[1] http://manmrk.net/tutorials/DOS/msdos7/emm386.htm

[2] https://en.m.wikipedia.org/wiki/Unreal_mode

[3] https://github.com/charliesome/doslinux/blob/master/doslinux...