Date: Mon, 29 Jan 2007 17:28:38 +0100 From: "Hansa" <mythtv@logic-q.nl> To: <rick-freebsd@kiwi-computer.com>, "freebsd geom" <freebsd-geom@FreeBSD.ORG> Subject: RE: How do I gmirror slices? Message-ID: <LHEFLGAENILPPDJIHADOOEJNCFAA.mythtv@logic-q.nl> In-Reply-To: <20070129153115.GA36446@keira.kiwi-computer.com>
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> > Hmm... I dont think so... There is the first sector of the
> disk, that is read
> > by the BIOS, then there are 8KB somewhere at a fixed position
> outside the file
> > system... And I think those 8KB are already able to
> understand/read UFS... :-)
>
> It's not really outside the file system, it appears at the
> beginning of the
> file system. It's 8KB for UFS1 and 64KB for UFS2. Not only
> that, but that
> 8K or 64K chunk is open/unused at the front of every superblock, that is:
> for every cylinder group, IIRC.
>
Is that why fdisk doesn't touches the first 8/64KB before the first slice?
Offset Size(ST) End Name PType Desc Subtype Flags
0 63 62 - 12 unused 0
63 12578832 12578894 ad4s1 8 freebsd 165
Regards,
-Hansa
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