heh, that bug happened at Galbadia on my tempramental disk two right at the end, i almost cried. No option but to take the disk out, snap it, and buy another
its hard to by another one try a disc cleaner or rubbing alchohol.

Ooh...If tht's the case, then I think I've got another way as well. Well, make tht my sister's way. She told me tht if you put a little bit of lotion on the scratch, and slowly rub it off [probably with a cloth?], the scratch will disappear. BUT, I never tried it, so I don't really know if it'll work.. =)
never tried thet but sounds good.