From owner-freebsd-stable  Fri Dec  1  0:36:28 2000
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From: Robert Nordier <rnordier@nordier.com>
Message-Id: <200012010836.eB18aMq02131@nordier.com>
Subject: Re: The trouble with boot0
To: jose@we.lc.ehu.es (Jose M. Alcaide)
Date: Fri, 1 Dec 2000 10:36:22 +0200 (SAST)
Cc: jhb@FreeBSD.org (John Baldwin), stable@FreeBSD.org
In-Reply-To: <3A26E955.C103AD88@we.lc.ehu.es> from "Jose M. Alcaide" at Dec 01, 2000 12:57:09 AM
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Jose M. Alcaide wrote:
 
> John Baldwin wrote:
> > 
> > Look at the geometry in your BIOS setup and make sure that the geometry fdisk
> > uses matches the geometry in your BIOS exactly.  If it doesn't, then you will
> > have to re-partition with the correct geometry I'm afraid.  Or you can try
> > lying to your BIOS and telling it that your disk's geometry is 3037/88/63, but
> > I doubt that that will work...
> > 
> 
> I'll try that tomorrow at work. But, if this is a geometry problem,
> why can I boot from ad0s1 and ad0s2, but not from ad0s3? Typically
> the geometry problems prevent booting from any slice. In addition,
> boot0 is working in "packet mode".
 
Are you sure that block 3997224 actually has a boot block on it?
I'd suggest using a utility, or writing a trivial program to access
the whole disk slice and verify that.  When I set up a lot of
multiple FreeBSD partitions, I found sysinstall tended to be confused
by them and didn't always install stuff in the right places.

To decide when boot0 or something else is at fault: you should be
able to boot by pressing F2 and then tell /boot/loader to boot from
the third slice.  If you can't do that, the problem is not due to
boot0.

-- 
Robert Nordier

rnordier@nordier.com
rnordier@FreeBSD.org


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