Reading crashed SCSI disk

[Derek Ragona]

If the drive has a physical failure in the mechanism or media, you may need 
to send it off to ontrack and have them try to recover the data.

         -Derek

At 11:24 PM 11/7/2006, Olivier Nicole wrote:
> > > I am wondering if there is a way to read the physical blocks (those
> > > that are readable) and save the data, from that I could be able to
> > > rebuild some of the mailboxes.
> >
> > dd if=/scsi_drive of=/some/file/name
> >
> > Should read anything readable, though without bs=xxx it may be
> > quite slow.  You can usually then mount the file via mdconfig(8).
> > If the partition table is intact you can specify that instead of the
> > whole disk. This can make the fiddly bit with trying to figure out
> > exactly what part will mount under md(4).
>
>I tried
>
>dd if=/dev/da0s1 of=/somefile
>
>dd stopped after a short while with I/O error, after a number of SCSI
>reading errors.
>
>best regards,
>
>Olivier
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