I deleted systemversion.plist. I reset my ibook g4 with single user mode with a command, since it would always boot with a blue screen BUT could still boot with safe mode. Now it boots up with a gray screen since I have no accounts, but thats fine with me. My question is if I could use PPC retail Leopard discs on it holding C when it boots up and it would reinstall the OS again? Basicly, I want to reinstall the OS I screwed up with no accounts and a retail disc. Please help.