That's a tricky one, as flash drives have special logic built in to avoid repeatedly overwriting the same block to prevent deterioration. On the other hand, byp

That's a tricky one, as flash drives have special logic built in to avoid repeatedly overwriting the same block to prevent deterioration. On the other hand, bypassing that logic in order to read out the data in the extra blocks is not possible in software, (unless there's a backdoor) and I don't know if the logic sits on the controller chip or the actual flash chip. If it's the latter, it'll be pretty damn hard to get to. EDIT +1 for mentioning c't