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Date:      Fri, 19 Aug 2011 09:00:11 +0400
From:      "Andrey V. Elsukov" <ae@FreeBSD.org>
To:        Kevin Oberman <kob6558@gmail.com>
Cc:        Yuri <yuri@rawbw.com>, freebsd-stable@freebsd.org
Subject:   Re: WD Advanced Format: do I need to do something special?
Message-ID:  <4E4DEDDB.6060201@FreeBSD.org>
In-Reply-To: <CAN6yY1sAZvQ_p9bmco-kSSwKc2ka_b7%2BXeK%2B5ufhTh0fkQdHXQ@mail.gmail.com>
References:  <4E4CD19E.5070108@rawbw.com> <20110818101034.GA1958@emphyrio.blackend.org> <CAN6yY1sAZvQ_p9bmco-kSSwKc2ka_b7%2BXeK%2B5ufhTh0fkQdHXQ@mail.gmail.com>

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[-- Attachment #1 --]
On 19.08.2011 3:11, Kevin Oberman wrote:
> I'd strongly suggest avoiding fdisk(8) and using gpart(8) on 8 and
> above. It has an
> alignment option that makes this all just work and also allows the use of GPT
> formatting. (Watch out for GPT on any system that needs to run 32-bit Windows.)
> 
> gpart create -s gpt ada1
> gpart bootcode -b /boot/pmbr ada1
> gpart add -t freebsd-boot -a 4 -s 128 -b 40 ad0
> gpart bootcode -p /boot/gptboot -i 1 ad0
> gpart add -t freebsd-ufs -a 4 -s 2097152 ada1
> gpart add -t freebsd-swap -a 4 -s 8388608 ada1
> gpart add -t freebsd-ufs -a 4 -s 10485760 ada1
> gpart add -t freebsd-ufs -a 4 -s 1048576 ada1
> gpart add -t freebsd-ufs -a 4 ada1

If you are using gpart with -a option you don't need to specify exactly numbers.
And if you want to align your partition to 4096 bytes you should use "-a 4k" or "-a 8".
E.g.

# gpart add -t freebsd-boot -a 4k -s 64k ad0

-- 
WBR, Andrey V. Elsukov


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