With programs like beyond compare i would compare written data to data already on the pc.
How does it work though would it compare them by sectors or the size of file?
Say i have a divx video on the pc and burned it onto DVD ran beyond compare to compare the files with each other.
If it said one was different would it give a reason why its different?
I just want to know how it scans the files if it does it by sectors would it compare the files by sectors and if theres a sector missing on the burned one would it instantly say so?