Hello, I was wondering if it was possible to install OS X on an external hard drive. My internal drive w/ my 2006 Imac Duo is completely shot, and I'd like to still use my computer before I install another drive. Currently I have a 500 GB Firewire external hard drive available (empty currently). I tried to install OS X on it from the install CD, but it stated I can not install OS on that drive. Is there a way around this, or must I wait until I install an new internal drive? Thanks!