From owner-freebsd-questions  Sat Oct 14 22: 7:23 2000
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Date: Sat, 14 Oct 2000 22:06:50 -0700
From: "Crist J . Clark" <cjclark@reflexnet.net>
To: Zhiui Zhang <zzhang@cs.binghamton.edu>
Cc: "Peter I. Hansen" <peterih@image.dk>, questions@FreeBSD.ORG
Subject: Re: boot from floppy
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Reply-To: cjclark@alum.mit.edu
References: <20001014184024.E25121@149.211.6.64.reflexcom.com> <Pine.SOL.4.21.0010142205260.25202-100000@opal>
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On Sat, Oct 14, 2000 at 10:06:37PM -0400, Zhiui Zhang wrote:
> 
> 
> On Sat, 14 Oct 2000, Crist J . Clark wrote:
> 
> > On Sun, Oct 15, 2000 at 02:56:51AM +0200, Peter I. Hansen wrote:
> > > Hi
> > > 
> > > I just Installed a freeBSD 4.1 on my slave harddrive, and wonder how I
> > > can make a boot floppy for it.
> > > I don't want to write in my MBR because i'm totally paranoid (I've
> > > messed it up before), and would like to make my OS selection by
> > > inserting the right floppy.
> > > I'm currently not able to boot my freeBSD.
> > > 
> > > I'm very new tu this OS and need very precise instructions for creating
> > > the floppy.
> > > I have access to a working Linux, and a win98 system.
> > > My freeBSD is installed on the first partition on my slave harddrive. I
> > > think its called ad1sd1 or somethong like that.
> > 
> > ITYM, ad1s1.
> > 
> > Start with a floppy with the kern.flp image on it. First, nuke some of
> > the stuff on it,
> > 
> >   # mount /dev/fd0a /mnt
> >   # rm /mnt/kernel.gz /mnt/boot/loader.rc
> > 
> > The easiest thing to do is to make the system boot from the second
> > drive from the start,
> > 
> >   # echo '1:ad(1,1,a)/boot/loader' > /mnt/boot.config
> 
> Should it be:
> 
> # echo '1:ad(1,a)/boot/loader' > /mnt/boot.config  ?

That will work too. However, in the syntax I used, the second "1" is
for the slice. You can specify which slice to boot from starting back
in 3.<mumble>. However, it looks like it is still undocumented. If you
only have one FreeBSD slice on a disk, the specification is not
needed. If there is more than one, IIRC, the first one boots.
-- 
Crist J. Clark                           cjclark@alum.mit.edu


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