From Gateway Support - HBCASE HandBook 286 Portable Computer (archive.org)
HandBook 286 Standard Boot Files
Part number HBCASE
autoexec.bat
PROMPT $P$G
PATH=C:\;C:\DOS;C:\WORKS;C:\DESKTOP;C:\LLXL;
config.sys
DEVICE=C:\DOS\HIMEM.SYS
DEVICE=C:\DOS\SMARTDRV.SYS
DEVICE=C:\DOS\SETVER.EXE
FILES=30
BUFFERS=30
DOS=HIGH,UMB
HandBook 286 (without PCCEMM)
Part number HBCASE
autoexec.bat
@ECHO OFF
PROMPT $P$G
SET DIRCMD=/P /OGN
C:\UTILS\MOUSE
PATH=C:\;C:\DOS;C:\WORKS;C:\DESKTOP;C:\LLXL;C:\BAT;C:\UTILS;
C:\WINDOWS;C:/UPDATE C:\MTEZ;C:\WP51;
SET WP=/MONO
CURSOR /AH (BLOCK CURSOR)
C:\UTILS\NUMLOCK -
REM C:\UTILS\CLOCK
C:\MTEZ\FAXMAN C:\MTEZ\FAXMAN.CFG
C:\MTEZ\POPPRINT
config.sys
DEVICE=C:\DOS\SETVER.EXE
DEVICE=C:\DOS\HIMEM.SYS
DOS=HIGH
DEVICE=C:\DOS\SMARTDRV.SYS 256
DEVICE=C:\DOS\RAMDRIVE.SYS 1024/E
FILES=47
BUFFERS=15
STACKS=9,128
LASTDRIVE=F
DEVICE=C:\DOS\ANSI.SYS
DEVICE=C:\DOS\INTERLNK.EXE