Douglas Gilbert wrote:
Ric,
Both ATA (ATA8-ACS) and SCSI (SBC-3) have recently added
command support to flag a block as "uncorrectable". There
is no need to send bad "long" data to it and suppress the
disk's automatic re-allocation logic.
That'll be useful in a couple of years, once drives that have it
become more common. For now, though, we're hacking current drives
using READ/WRITE LONG commands, with a corresponding patch to libata
to allow for the longer "sector size" involved.
Having real bad sectors, exactly where we want them on the media,
sure does make testing / fixing the EH mechanisms a lot more feasible.
Cheers
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