4 ms·
Actually what if one of the blocks used for the critical data was deemed degraded and removed from the pool and replaced with a reserve before it was overwritte
by josephlord 12y ago
Actually what if one of the blocks used for the critical data was deemed degraded and removed from the pool and replaced with a reserve before it was overwritten. No way to delete then although expensive to retrieve it might be possible.
Depends on the capability of your opponent and the consequences if your guess is wrong.
- raverbashing 12y agoYeah, also block size, I'm not sure how big they usually are. 512 bytes should be ok (for a picture), if it's bigger I'd be more worried Might be easier to microwave the SD card
- nitrogen 12y agoFlash uses pretty large block sizes (look up specs for write size and erase size for common flash media; it's often 4KB writes+128KB erases), and the wear leveling algorithm can unpredictably shuffle the writes around. Your final paragraph is probably the only safe way to know an SD card's internal flash is unrecoverable, followed by physical destruction.