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Date:      Sun, 30 Sep 2012 21:43:50 +0400
From:      "Andrey V. Elsukov" <ae@FreeBSD.org>
To:        Raoul MEGELAS <rmgls@free.fr>
Cc:        freebsd-current@freebsd.org
Subject:   Re: gpart on macbook air
Message-ID:  <506884D6.8090507@FreeBSD.org>
In-Reply-To: <20120930163750.0D885D48144@smtp5-g21.free.fr>
References:  <20120930163750.0D885D48144@smtp5-g21.free.fr>

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On 30.09.2012 20:37, Raoul MEGELAS wrote:
> i installed CURRENT on a macbook air
> (internal ssd as you know):
> i noticed the following:
> 
> 1. on freebsd, deleting a partition with gpart: say
> gpart delete -i 4 ada0
> dammage the osx boot.
> of cours, booting with a backup disk and repairing the disk
> make it functional again.
> any light woukd be appreciated on this topic.

Hi,

When you are deleting a partition, the kernel completely overwrites  the
partition table and PMBR area. You can compare first 34 blocks before
deletion and after to see what is going on.

-- 
WBR, Andrey V. Elsukov



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