NeilBrown wrote:

If you want to write to it which might make the drive think it isn't
bad any more, you could
   dd if=/dev/zero of=/dev/sdj seek=1953103080 count=1

But if it were me, I would do
   dd if=/dev/sdj of=/dev/null skip=1953103080 count=1
and confirm that gives and error, just to double check the numbers.

Thanks very much for your help. I managed to get rid of the bad block. 
However I had to write 4kB at once to the bad region (bs=4096) for the drive 
to correct the block. Using bs=1 didn't seem able to get rid of the errors.

Strangely, the Reallocated_Sector_Ct is still zero on the drive even though 
Current_Pending_Sector is now zero. This is a Samsung HD103UJ by the way.

Jeremy

-- 
Jeremy Sanders [off-list ref]   http://www-xray.ast.cam.ac.uk/~jss/
X-Ray Group, Institute of Astronomy, University of Cambridge, UK.
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