> To test, say with a 16 GB SD, fill the SD to all except the last 1 KB,
> and with a looping script, write 1KB of 1's to the remainder of the
> SD, erase the "bits," then 1KB of 0's, erase the "bits", and so on;
I'm surprised. I would have expected uSD cards, just like SSDs to rely
mostly on a (small) amount of extra storage, i.e. the actual amount of
NAND storage is higher than that reported as being available.
This way the uSD card knows for sure which blocks are in use and which
ones aren't (without having to rely on things like TRIM).
Stefan
