Mark's TO-DO list for hdparm:
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- implement the QDMA functions using /sys/

- more ATA8 updates for IDENTIFY data

- Add "wipe-drive" functionality via SCT WRITE_SAME (or manual).

- Add "make_bad_sector" functionality via RW_LONG and SCT RW_LONG.

- Add "heal_bad_sector" functionality via SG WRITE.

- Add "surface-scan" functionality via SG READ_VERIFY.

- Add utility to recover data from a drive with bad sectors.

