Hi there... I've been running an iBook G4 since 2004 - OSX 10.4.11 The other day I was running my usual apps - firefox, iChat and word...computer froze. Force quit didn't work. Did a manual power off, and restart...stuck at the grey apple screen. Tried starting in Safe Mode - no luck. Tried starting off the install disk and running Disk Utility. Disk Utility tells me it cannot repair - because the disk - my HD cannot be unmounted. Tried to do an Archive/Install - could not unmount disk. Called apple - started in single user mode, ran fsck and got Single Node Error. Tried starting from the disk to do zero disk and reinstall - same message, could not unmount disk.... Is there anything left to do? Is it worth attempting to place the HD? (I was told it could be the HD or it could be the Logic Board) I've never had any problems with the iBook until now...my husband and I are already in the market for a new computer for him. He's running a hand me down iMac G5 that is slow, and filled up with someone else's stuff. We were going to use some of our money to buy him a brand new MacBook (poor guy has never had a brand new computer of his own). So now we're in the market for possibly 2 new computers...and I am balking at the cost of 2 Macbooks for us - we could go refurbed....and we also get the educator discount. I'm also toying with the idea of 1 MacBook and 1 PC? - but it seems the PCs I'm pricing are not all that far off from the refurbed MacBook. So - better to go 2 brand new MacBook? One new - one refurbed? One MacBook and one PC? Or attempt to fix the iBook? Thoughts....?