[Dug2]

I just installed the latest software updates including an itunes one,
and now my G4 powerbook won't restart. I can't get past the grey
screen and the spinning gearwheel.

I've sent this to a repair guy and it's got him stumped as well.

Any clues please? Could it be that there wasnt' enough hard disk space?

[ibook_steve]

The update would not have installed if there wasn't enough disk space. How long did you wait with the spinning wheel (or did the wheel stop moving)? It can sometimes take a while after an update.

Try the usual: boot from the restore disks or an OS X retail disk (if you've moved up to Leopard. Run Disk Utility to make sure everything is OK. If it still won't boot, you might need to try an archive and install. However, if you are concerned about free space on your drive, hook up the machine to another with Firewire target disk mode and clear off some stuff to make space.

Steve

[imitchellg5]

Sounds like either a hard drive in need of some major repair via Disk Utility or a dead hard drive.

[packet of krisps]

The same exact thing happened to my PowerBook, I just reinstalled Leopard and don't update.