From owner-freebsd-current@FreeBSD.ORG  Fri Dec 19 05:06:51 2003
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To: Wiktor Niesiobedzki <bsd@w.evip.pl>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Fri, 19 Dec 2003 13:53:16 +0100."
             <20031219125316.GB3682@mail.evip.pl> 
Date: Fri, 19 Dec 2003 14:06:48 +0100
Message-ID: <6988.1071839208@critter.freebsd.dk>
cc: current@freebsd.org
Subject: Re: GEOM oddity with verbose boot 
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In message <20031219125316.GB3682@mail.evip.pl>, Wiktor Niesiobedzki writes:

>Ofcourse, it finds, but what makes me worry, is how there could be a valid bsd
>label, if there is a valid UFS2 superblock?
>If I understand correctly, in first 8192 bytes of partition are at the same
>time:
>- UFS2 superblock
>- BSD label

The UFS2 superblock can be located four different places, at 0, at
8k, 64k or 256k into the partition.

The BSDlabel is at 512 bytes offset (on i386).

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.