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There hasn't been any benefit to doing so for at least two decades. Most[1] disks since then transparently remap bad blocks, so you'll never encounter a read er

There hasn't been any benefit to doing so for at least two decades. Most[1] disks since then transparently remap bad blocks, so you'll never encounter a read error from a just-written block, nor will you ever encounter a write error unless the disk is out of spare blocks. If the disk is out of spare blocks, the bad block check won't save you; the disk simply shouldn't be used. [1] I don't know of any counterexamples, but neither do I know that there are none.

rbanffy 5y ago
> If the disk is out of spare blocks, the bad block check won't save you; the disk simply shouldn't be used. While I completely agree that data is more valuable than the spinning metal it lives on, if the bad block consumption rate is constant, there is little reason to assume the drive will die. You can probably use it as one of a dozen drives in a RAID-[0,1] read cache until it decides to self-retire.