I am trying to upgrade to a 160gb HDD. I can't get the external enclosure to power that drive though. It is already partitioned. So anyway my thought is, swap out the 80gb HDD that came with the dell e1505 for the 160gb HDD. Problem now is that the OS will be on the external HDD and nothing will be on the internal. So how do I get the BIOS to look for the external as the boot drive? My hope is that at that point the 80gb drive will spin as an external where the 160gb drive is recognized but it doesn't spin when attached via usb.