On 17/05/2022 22:27, Pascal Hambourg wrote:
Le 17/05/2022 à 21:00, Wol a écrit :
On 17/05/2022 15:57, Pascal Hambourg wrote:
On the other hand, I have seen faulty drives report success on write
to an unreadable block then failing immediate read at the same location.
That's exactly what I'd expect from a write (as opposed to a
write-and-verify, they're not the same thing ... :-(
Even when the drive knows that a read of this block previously failed ?
On the contrary I would expect from a decent drive to verify after the
write and to reallocate the block if the read still fails.
The drive knows, or the OS knows? Cheap drives won't remember,
Enterprise drives maybe. Unless the OS explicitly asks for a "write and
verify", it's unlikely to happen, and cheap drives probably won't even
recognise such a request.
Cheers,
Wol
