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