Still not detecting it. I couldn't get dos to load properly with you instructions though, I had to edit them slightly to this (changes highlighted in red)

AUTOEXEC.BAT

@ECHO OFF
PATH \;C:\WINDOWS;C:\WINDOWS\COMMAND;C:\WINDOWS\SYSTEM;
::
SET TEMP=C:\WINDOWS\TEMP
SET TMP=C:\WINDOWS\TEMP
GOTO %CONFIG%
::
:WINDOWS
SET DIRCMD=/A/O/P/V
ECHO Loading Windows 98 Second Edition. Please Wait.........
c:\win
GOTO END
::
OS
ECHO Loading MSDOS 7.10A. Please Wait............
ECHO
LH C:\WINDOWS\COMMAND\DOSKEY/INSERT/REINSTALL
LH C:\MOUSE\GMOUSE
SET COMSPEC=C:\COMMAND.COM
SET DIRCMD=/A/O/P/V
SET COPYCMD=/V/-Y
GOTO END
:END
EXIT


CONFIG.SYS

[Menu]
menucolor=9,0
menuitem=windows,Windows 98 Second Edition
menuitem=dos,MSDOS 7.10a
menudefault=windows,8
;menudefault=dos,8

[COMMON]
SWITCHES=/F
break=on

[windows]

[dos]

SHELL=C:\COMMAND.COM C:\ /E:512 /p
DEVICE=C:\WINDOWS\HIMEM.SYS /q
device=C:\WINDOWS\emm386.exe d=64 noems frame=none I=B000-B7FF
dos=high,umb,noauto
devicehigh=C:\WINDOWS\COMMAND\ansi.sys
FILEShigh=60
stackshigh=9,256
BUFFERShigh=40



MSDOS.SYS

[Paths]
WinDir=C:\WINDOWS
WinBootDir=C:\WINDOWS
HostWinBootDrv=C

[Options]
drvspace=0
dblspace=0
BootMulti=0
BootGUI=0
BootWarn=0
Network=0
LOGO=0
DoubleBuffer=1
AutoScan=1
WinVer=4.10.2222
Bootkeys=1
BootMenu=0
BootMenuDelay=30
;
;The following lines are required for compatibility with other programs.
;Do not remove them (MSDOS.SYS needs to be >1024 bytes).
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxa
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxb
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxc
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxd
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxe
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxf
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxg
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxh
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxi
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxj
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxk
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxl
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxm
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxn
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxo
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxp
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxq
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxr
;xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxs



It seems like the serial port may not be set up properly (this is a fresh 98 install) even though it shows up in device manager.

SET COMSPEC=C:\COMMAND.COM

Sorry I missed that. I had a C:\COMMAND directory on mine.

And the "c:\win"? Windows is in C:\WINDOWS isn't it. Was it just the path statement which allowed the machine to pick up the above command?

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