*BSD News Article 91607


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From: Norbert Grundmann <grundman@i5.informatik.rwth-aachen.de>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: OS2 Boot Manager with FreeBSD?
Date: Fri, 21 Mar 1997 16:21:25 +0100
Organization: Technical University of Aachen, Germany
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References: <333200f1.183330601@news.gte.net> <5gtgl0$c0s$2@nz12.rz.uni-karlsruhe.de> <01bc35de$76b95300$f3e94dc2@hugo09.ticsoft.de>
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Patrick M. Hausen wrote:
> 
> Philipp Mergenthaler <s_mergen@ira.uka.de> schrieb im Beitrag
> <5gtgl0$c0s$2@nz12.rz.uni-karlsruhe.de>...
> > Jeff Tomich <hoot@d-s-s.com> wrote:
> > > Can FreeBSD boot from the OS2 boot manager?
> > Yes, it works perfect. I did the original partitioning of my disk with
> > OS/2 and left a part of the disk unused.
> > After installing FreeBSD I used OS/2's fdisk to include this partition
> into
> > the bootmanager's list, mark it bootable (and set it as default choice
> :-) ).
> >
> > Bye, Philipp
> >
> > P.S. The FreeBSD-Installation asks you (after the partitioning, I think),
> > whether you want to have a bootmanager. You have to choose "don't touch
> it"
> > here.
> 
> Another big gotcha: if your disk has more than 1024 cylinders, beware.
> While it is perfectly reasonable to have a partition extend beyond
> that limit, and while you can boot FreeBSD off such a partition as long
> as the root FS resides whithin the first 1024 cylinders, that stupid
> boot manager won't let you enter that partition into the menue,
> because it thinks, it extends past cylinder 1024 so you can't boot off
> it ... :-(
> 
> Patrick

...but in most cases the controller has a logical translation
to break the >1024 cylinders into less and greater ones.
So you have no problems at all. I installed FreeBSD, OS/2, MSDOS
and some other systems on different disks of my host and have
had no problems to start them, even on a 2GB disk with more than
1024 cylinders.

N. Grundmann

EMail: grundman@i5.informatik.rwth-aachen.de