Hi everyone, I have a big problem. My iBook G4 wont startup. I started in verbose mode and I get the following message. disk0s3: I/O error and then it tells me Couldn't find root user. Sleeping and trying again. A boot in Safe Mode didnt work. I booted from the System DVD and ran disk utility and it told me that the disk seems ok. I repaired both the disk and the permissions. The problem occurred after I installed iTunes, Safari and a Security Update and the computer froze when trying to restart. Any help is appreciated. Thank You.