Also if you're working with a GDI just use gdi_explorer (by Japanese_cake, Google it)
Also congrats on dumping a disc!! Always glad to see more people doing it. If you have time and patience it might be worth checking redump and dumpcast (possibly trurip) to see if any of your discs could help towards preservation.
I already have the official Sonic Adventure cd. I don't need to burn another cd. I only want to make cdi with selfboot after I ripped the game from my official game cd.