I unknowingly put a scratched, unplayable disk of Super Mario Galaxy into Usb Loader Gx and installed the wbfs. Because the disk is scratched to the point of being playable up until the final boss battle with Bowser playing as Luigi but nowhere after that, i cant beat the final boss which is mildly infuriating. Is my best bet to just buy another copy of SMG? If I do need to buy another, how would I go about reinstalling the wbfs correctly without "overlapping" the current wbfs of SMG? I was thinking of just deleting the folder and therefore wbfs, but I wasn't sure if I would have to find new covers or anything. Any advice is appreciated, Thanks