I don't know but I think so. For months my Mac was behaving really oddly. I know now that the hard drive was failing and had 'bad blocks' or that's what the Apple Genius Bar guy thought and it was. The Apple Hardware test on a loop ran for 22 hours and said the hard drive was fine but for a couple of weeks it wouldn't boot up except in safe mode (with shift key) although all the usb etc were still working and I thought that when you booted up like that, that they were disabled. After a couple of weeks, it wouldn't boot up any more which I think is classic bad block behavour. If I had bought Disk Warrior earlier and been able to run it before it stopped booting up, I probably wouldn't be having these problems. Now I've changed the drive, it won't even let me boot up using a disk. I have put my old drive in a caddy because I wasn't able to back up (this problem started when my time machine stopped working) so I thought I might try booting up on that in case it wasn't the drive. How can I test if there is now a problem with the optical drive? I still have my G4 which works perfectly so perhaps I should put Sow Leopard into it's drive and try and boot up like an external using a FireWire cable. What do you think. All advice gratefully received!
