> To wipe a drive use dban. - live CD which uses (US) gov approved > standards of wipe methods/patterns.
Or shred, which comes with coreutils. > dd is only going to show sectors on a failed drive - too late! > > To explain, modern drives have a store of locations they can use to > transparently replace any failed locations (apparently similar to the > way SSD's do it) - the internal drive electronics handle this and its > not visible externally though smart data seems to show it, but as google > says, smart is a bit suspect. The problem of a bad sector will only > show once all the reserved locations are used up, by which time the > drive is usually in rampant failure. > > I do suspect this is one reason for googles results - actual failures of > the media (as against the motors/electronics are much as they always > have been, but the drives are not reporting them until its too late. Ahh - go to know. My reasoning assumed that smart reports all remaps.