Date: Tue, 4 Nov 1997 23:08:19 -0500 (EST)
From: Paul W Brannan <pbranna AT CLEMSON DOT EDU>
cc: opendos AT delorie DOT com
Subject: Re: Opendos,win95 and NT in one HDD
In-Reply-To: <Pine.OSF.3.95.971104103759.25170A-100000@unicorn.it.wsu.edu>
Message-ID: <Pine.OSF.3.96.971104230136.32520B-100000@hubcap.clemson.edu>
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> > If you want to triple-boot OpenDOS/Win95/NT you'll have problems with Win95
> > and OpenDOS, as they both assume that the first FAT partition on the disk is
> > drive C:, and insist on being booted from C: - so can't live in seperate
> > partitions without heavy application of black magic.  A work-around is to have
> > 1 FAT partition, with OpenDOS on it, then 'upgrade' to Win95, but with the
> > option of dual-booting.  Then create your NTFS partition and install NT. 
> > You'll have to DUAL-boot between NT and Win95, and then use Win95's 'boot old
> > version of MS-DOS' option to get at OpenDOS.

I know this doesn't work with the original OpenDOS 7.01.  Windows 95
doesn't think ibmbio.com is valid, so it won't boot it.  There is another
option though, which is the one I like to use.  It is called grub, for
GRand Unified Bootloader.  There are instructions for how to use it in the
OpenDOS faq on www.delorie.com, or you can get instructions that may be a
little easier to follow from my page at
www.musc.edu/~brannanp/null/opendos (though note that you will have to do
a little bit of work... I never did quite perfect the process of
installing grub.  Also, there may be a new version of grub available, I
haven't looked).  My page is kind of old, as I have pretty much lost
interest in DOS development for the moment... it's a great idea, but there
are other things that are more important.

> Win95 will boot from d: (at least if c: and d: are partitions on one HD.
> I don't know if it works if they're 2 different physical disks).
> I've got Matthias Paul's updated ibmbio.com to boot from d:, but I 
> haven't tried it with standard OpenDOS.  However, both OSes will try to
> load c:\config.sys and c:\autoexec.bat.  The solution is to put your
> Windows configuration into config.sys and autoexec.bat .  Then, put your
> opendos config.sys into dconfig.sys.  OpenDOS will load dconfig.sys and
> ignore config.sys.  Finally, find the shell= line in dconfig.sys, and add
> /p:odauto.bat .  This will cause OpenDOS to run odauto.bat instead of
> autoexec.bat.  Finally, put your OpenDOS' autoexec.bat into odauto.bat and
> use your favorite boot manager.

This is exactly what I did.

> You can get the alpha version if ibmbio.com from:
> http://www.rhrz.uni-bonn.de/~uzs180/opendeng.html
> 
> Evan
>