My parents have this iBook G3 500, which i was trying to download the new airport software for, when it all of the sudden stopped responding. I tried to restart; didn't work, then i tried a reboot and zapped the P-RAM; didn't work. Then i decided to try and listen to the HD, to see if it was even spinning up, well it was spinning and then clicking, and it seemed to repeating non-stop. BTW, it seemed to boot, but then would get stuck on the grey apple startup screen with the rotating thing, underneeth the apple logo. Anyway, i currently tried to use the 10.2 cd, to see if i could get it to boot from that, and of course, no it didn't work. Now, i have the iBook hoked up to my G4, using Target disk mode. When i ran Disk Utility, from my computer for the iBook, it gives me this: Repairing disk for X Files Mounting Disk(S,"Checking HFS Plus volume.",0) Checking Extents Overflow file. Checking Catalog file. Keys out of order Rebuilding Catalog B-tree. The volume X Files could not be repaired. Error: The underlying task reported failure on exit (-9972) Repair attempted on 1 volume 0 HFS volumes repaired 1 volume could not be repaired I don't know what to do. Has anyone else had this problem, and if what did/ or should i do? Do you think the HD is trashed? I dont undestand why it says Keys out of order. What should i do?