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Subject: Re: "disklabel -rw ar0 auto"  breaks HPT raid0+1
In-Reply-To: <200111112347.fABNlUS48412@apollo.backplane.com>
To: Matthew Dillon <dillon@apollo.backplane.com>
Date: Mon, 12 Nov 2001 02:06:18 +0100 (CET)
Cc: John De Boskey <jwd@FreeBSD.ORG>,
	Stable List <freebsd-stable@FreeBSD.ORG>
Reply-To: clefevre@citeweb.net
From: Cyrille Lefevre <clefevre@citeweb.net>
Organization: ACME
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Matthew Dillon wrote:
> 
> :
> :Matthew Dillon wrote:
> :>     There is a section near the end of the 'disklabel' manual page that
> :>     describes how to partition a disk with a real slice entry instead of
> :>     dangerously dedicated mode.
> :
> :are you talking about the "BUG" section ? it only say that disklabel
> :doesn't clobber the partition table. the problem is that it overwrite
> :the following 15 sectors w/ boot2 while the first 10 sectors are used
> :by the RAID hardware... do you see the problem. using fdisk, disklabel
> :writes it's boot informations starting at sector 64 since the first
> :half cylinder is reserved by fdisk. so, it doesn't clobber anything.
> :is this explanation more clear ?
> 
>     No, the EXAMPLES section.

there is nothing in the "EXAMPLES" section which prevent to write
the first 16 sectors if using the drive in `dangerously-dedicated'
mode that is w/ no fdisk partition.

Cyrille.
-- 
Cyrille Lefevre                 mailto:clefevre@citeweb.net

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