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Date:      Sun, 7 Jul 1996 10:15:34 +0200 (MET DST)
From:      J Wunsch <j@uriah.heep.sax.de>
To:        freebsd-current@FreeBSD.org (FreeBSD-current users)
Cc:        scrappy@ki.net (Marc G. Fournier)
Subject:   Re: New install using 2.2-SNAP ...
Message-ID:  <199607070815.KAA24721@uriah.heep.sax.de>
In-Reply-To: <Pine.NEB.3.94.960706225721.8294A-100000@ki.net> from "Marc G. Fournier" at "Jul 6, 96 10:58:25 pm"

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As Marc G. Fournier wrote:

> 	The reason I never noticed this before is that when I normally
> install, I allocate the whole drive to FreeBSD, since I'm never going
> to co-locate Linux/DOS on the same box...
> 
> 	For some reason, this time, I failed to do that :(

I you know how to read an fdisk table, and you can re-compute the
required entries, you don't need to reinstall.  What you are suffering
is basically that your start values for the FreeBSD slice don't agree
in terms of C/H/S from a BIOS point of view.  Anyway, the LBA offset
for the partition start is right, and if you pick the BIOS' geometry
idea, you can recalculate the required C/H/S values to enter there.
(Don't forget that sectors are numbered base 1, while cylinders and
heads are numbered base 0 -- historical baggage.)  This will usually
end up in ``odd'' numbers, i.e. not starting on what the BIOS believes
were a track boundary, but don't care, it will work nevertheless.

The reason why you don't see it in ``dangerously dedicated'' mode is
that the starting offset LBA is 0 there, and you can hardly miscompute
a 0 into the wrong C/H/S values. :-)

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)



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