Date: Wed, 30 Apr 2003 14:53:21 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Heiko Schaefer <hschaefer@fto.de> Cc: freebsd-current@freebsd.org Subject: Re: gbde init -i issue Message-ID: <8170.1051707201@critter.freebsd.dk> In-Reply-To: Your message of "Wed, 30 Apr 2003 14:10:57 %2B0200." <20030430140915.V27116@daneel.foundation.hs>
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In message <20030430140915.V27116@daneel.foundation.hs>, Heiko Schaefer writes: >> If it is a BSD disklabel or SUN label, change it so it starts at least >> 16 sectors into the disk. > >hm ... i now use a partition that starts 16 sectors later and that problem >is gone. great. > >... this solution disturbs me slightly, but i'll get over it :> >why can't i use the space within a partition for anything i want to ?! I havn't research this, but this is my best guess: Back in the good old days, a VAX used the first N sectors for booting from. Accordingly, filesystems like UFS were designed to leave some sectors at the front for the boot code, so the superblock lives in sector 16 for UFS. When disklabels were added, they retained this bit of hackery, rather than fix it, probably in the name of backwards compatibility. Sun seems to suffer from the same issue. -- 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.
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