I have tried to back up 2 different PS2 games "off road" and "square pants" using alcohol 120%. Burn process as described by owner went successful (it appears). Do the swap card process as described by the instructions from there site. At the Load screen is where i swap out the boot disk and put in backup. Once door is closed and pin is replaced to close position, i click x for load. I then get "not a valid PS2 disc". I have read many posts to no avail. I am using a CD-r disk. The original discs are purple as instructed for cd rom backups. Can someone please help. I want to be successful at this before I go and get a dvd burner.