DVD+R dual layer media support
Until now it has been impossible to play DVD9 games backed up onto dual layer media on the PS2 due to a problem with reading from the second layer because the data format on burnt DL discs is different than on pressed discs (burnt = OTP, pressed = PTP). However, we have discovered a software hack which enables the PS2 to read even burnt OTP discs meaning it is now possible to make backups of dual layer games such as GT4. ToxicBIOS includes an "auto-patching" mechanism which applies this patch on the fly.