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Date:      Mon, 16 May 2011 18:59:46 +0400
From:      "Andrey V. Elsukov" <ae@FreeBSD.org>
To:        Michiel Boland <boland37@xs4all.nl>
Cc:        FreeBSD Current <freebsd-current@freebsd.org>
Subject:   Re: -CURRENT: mountroot failed
Message-ID:  <4DD13BE2.8020405@FreeBSD.org>
In-Reply-To: <4DD114FE.9080406@xs4all.nl>
References:  <4DD015F1.6090203@xs4all.nl> <4DD02B73.10807@FreeBSD.org> <4DD114FE.9080406@xs4all.nl>

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On 16.05.2011 16:13, Michiel Boland wrote:
>> Can you send me a binary image of the first sector of ada0?
>> Also, output of `gpart list ada0` would be helpful.
> charlemagne# gpart list ada0
> Geom name: ada0
> modified: false
> state: OK
> fwheads: 16
> fwsectors: 63
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> last: 1953525167
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> first: 63
> entries: 4
> scheme: MBR
> Providers:
> 1. Name: ada0s1
>    Mediasize: 1000204648448 (931G)
>    Sectorsize: 512
>    Mode: r5w5e9
>    attrib: active
>    rawtype: 165
>    length: 1000204648448
>    offset: 16384
>    type: freebsd
>    index: 1
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> end: 1953524735
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> start: 32

Your partition has start offset below the first LBA.
As temporary workaround you can set loader tunable
kern.geom.part.check_integrity=3D0 (recently added to CURRENT)

> (Note that I partitioned the disk so that partition 1 starts at a
> multiple of 4096 bytes; this is one of those 4kb-sector disks that
> performs extremely badly if access is not aligned on a 4k boundary.)

What tool did you use for partitioning?

--=20
WBR, Andrey V. Elsukov


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