Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!mcsun!unido!ztivax!tumuc!lan!rommel
From: rommel@lan.informatik.tu-muenchen.dbp.de (Kai-Uwe Rommel)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Running OS/2 and MS-DOS on same computer
Keywords: OS/2, booting, fdisk, partition
Message-ID: <773@tuminfo1.lan.informatik.tu-muenchen.dbp.de>
Date: 1 Sep 89 11:11:59 GMT
Sender: news@lan.informatik.tu-muenchen.dbp.de
Reply-To: rommel@lan.informatik.tu-muenchen.dbp.de (Kai-Uwe Rommel)
Distribution: comp.sys.ibm.pc
Organization: Inst. fuer Informatik, TU Muenchen, W. Germany
Lines: 16

I have written an dualboot (or should I say multiboot ?) program, that
allows any AT (or 386) to have DOS, OS/2 and XENIX installed on a single
harddisk and to choose at boot time which to run. DOS and OS/2 share
a DOS type partition (<=32MB with DOS<=3.30 and OS/2 1.0 and any size
with DOS>=3.31 and OS/2 1.1). After installing OS/2 and my dualboot,
DOS can be installed as usual with SYS from a floppy as often as needed
(that means, you can change your DOS version without reinstalling OS/2).
The only disadvantage is, that OS2KRNL, IBMBIO.COM/IO.SYS and
COMMAND.COM must be patched to look for CONFIG.OS2 and CONFIG.DOS and
the right AUTOEXEC.* at boot time because I hated to rename files before
a system is booted.

I would distribute the multiboot as shareware for about $10. If there
are any interests, let me know.

Kai Uwe Rommel