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Date:      Mon, 8 Jul 1996 23:07:06 +0100
From:      "Lars G. Erlandsen" <lerland@icrt.demon.co.uk>
To:        James Raynard <fqueries@jraynard.demon.co.uk>
Cc:        questions@freebsd.org
Subject:   Re: Help: FreeBSD 2.1 'mount' fails on 2.0 SCSI partition
Message-ID:  <X49hbDAKaY4xEw8h@icrt.demon.co.uk>
In-Reply-To: <199607051709.RAA01856@jraynard.demon.co.uk>

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In message <199607051709.RAA01856@jraynard.demon.co.uk>, James Raynard
<fqueries@jraynard.demon.co.uk> writes
>If I understand correctly, the problem is something like this:-
>
> wd0 DOS slice, FreeBSD-2.1.0 root partition
> sd0 not relevant here
> sd1 dedicated FreeBSD-2.0 disk with a trashed root partition, but a
>                             /usr partition with valuable data in it.
Nearly correct. sd1: 700 Mbyte partition used for FreeBSD 2.0 out of a
total of 1080 Mbytes.

'Disklabel' reports:
# /dev/sd1s1:
type: SCSI
disk:
label: MBR based label
flags:
bytes/sector: 512
sectors/track: 32
tracks/cylinder: 64
sectors/cylinder: 2048
cylinders: 700
sectors/unit: 1435616
rpm: 0
interleave: 0
trackskew: 0
cylinderskew: 0
headswitch: 0           # milliseconds
track-to-track seek: 0  # milliseconds
drivedata: 0

8 partitions:
#        size   offset    fstype   [fsize bsize bps/cpg]
  a:    61440        0    4.2BSD     1024  8192    16   # (Cyl.    0 -
29)
  b:   163840    61440    4.2BSD     1024  8192    16   # (Cyl.   30 -
109)
  c:  1435616        0    unused        0     0         # (Cyl.    0 -
700*)
  e:  1210336   225280    4.2BSD     1024  8192    16   # (Cyl.  110 -
700*)

>

> System will boot off FreeBSD partition on wd0, but on attempting to 
> mount /dev/sd1s1d, gives errors about "overlapping partitions" and 
> mounts the trashed root partition instead! How to recover data from 
> /usr?
Correct. Message is:
sd1s1: rejecting partition in BSD label: it isn't entirely within the
slice
sd1s1: start 32, end 1435647, size 1435616
sd1s1d: start 0, end 2110811, size 2110812


Regards,

Lars G. Erlandsen, Inter-Connect RealTime Ltd.
email lerland@icrt.demon.co.uk



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