Casper H.S. Dik wrote:
> David Kirkby <david.kirkby@onetel.net> writes:
>
>
>>A friend has a Sun barcoded (540-4689) hard drive, made by Fujitsu.
>>Unless I am very much mistaken, the disk is half the capacity marked on
>>the drive.
>
>
> Looks like it was labelled incorrectly by someone.
>
>
> Clear the label and relabel

Hi Casper,

How is the best way to clear the label? You posted something some time
back in 2002

http://groups.google.co.uk/group/com...6bef3587322903

and said:

"What you could try is zap the label with dd, assuming you have no
data in the disk:

dd if=/dev/zero of=/dev/dsk/cX...... count=16

and then re-run format."

I would have thought one needs to write to the raw device
(/dev/rdsk/c?t?d?s2), but perhaps I am wrong.

Will it be necessary to boot from a CD to do this? The disk is the boot
disk.

The problem I have is explaining to a friend how to do it, so if I can
ssh to the box, and do it myself, rather than explain every single
command to him, it would be preferable! His UNIX knowledge is next to zero.

> (will lose all data except when the new label
> matches the same partitions)

Chris Lawson said:

# prtvtoc -s /dev/rdsk/{identical disk id}s2 > tmp_file
# fmthard -s tmp_file /dev/rdsk/{screwed up disk}s2

which looks attractive if it will work. We have a second identical disk,
which unlike this one does work at its full capacity.

>
> Casper

Dave Kirkby
--
David Kirkby,
G8WRB

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