The internal 30gb hard drive on my titanium 667 apparently is giving out on me. I hear clicking sounds and upon powering up, the screen stays on the apple logo and never boots up. Diagnosis? I was wondering if it were possible for me to install the mac os on an external firewire drive and boot up and operate my powerbook from there. is this even possible? How do i get the os copied on that external drive anyway? when i tried it from my friends mac, the firewire drive never appeared on the list of destination drives to install the os on. any clues? how can i retrieve my data from my internal drive? when i started up on target disk mode i was able to see my hard drive on my friends' mac. when i opened it the spiining pizza kept coming on, i was able to save 2 files to her drive but every time i attempt it again, the pizza carousel comes on to brighten my day. please help. thanks.