Hi there, I'm brand new to Ubuntu and am having issues installing to an external hard drive. I have a Dell Inspiron 1525 with a busted internal HD. So, I installed 12.04 onto a WD passport with 160 Gigs, hoping to run it off that instead. Install went fine and when I was prompted to restart the computer it booted up perfectly. However, minutes later, it would freeze. I then shut down the laptop and restart only to get a message telling me there are no bootable devices. Boot Menu is set with USB devices as priority. Even though it won't boot from external, when booting from a live CD all the files on the hard drive appear to be intact. Also, the device won't boot on any computer, not just the Inspiron. If anyone can help I'd be extremely thankful!