PSXDupe said:It does matter what data you put in there, Nintendo (IF THEY WANTED) could pick
a sector that is not in use and check the contents of that sector.
All they need to do is pick 1 random unused sector and check it. It would take
milliseconds to do the check, and then they can stop the disc from loading.
They only safe way is to resign each disc.
But how will "Nintendo" know what value to expect there?
It could be anything.
To me, the best "no-brainer" way for Nintendo to block scrubs is to check for large sequences of the same number in the unused sectors.
That is a clear "fingerprint" of the scrub process.
To check each byte of the garbage does not seem feaasble, because then Nintendo had to have a) an hash of the original garbage and compute the hash of the "new" garbage (I guess there is no such thing as that, today) or b) a copy of the expected garbage to compare.