I’m trying to recover data from an old DVD-R (Fuji/Ritek). The media
itself is dubious, and I suspect that it was probably burned at high speed.
I tried to do a byte-by-byte compare after copying original files to
hard drive, and got a few mismatches. Tried again, same thing.
This was on a Plextor 716-A. Decided to try on a Lite-On Combo
SOHC-5232K which will read DVDs. Got a different result. I suspect
that the DVD itself is at fault, though I can’t explain why the LiteOn
would give a different result.
Are there recommended programs that will try to re-read sectors
to make sure that they are correct? I know that there is a program
called ‘BadCopy Pro’ that is supposed to do this (though I don’t think
it will just read the entire DVD). Are there others?