Colin,
I'm not trying to start some flame thread here, just stating the facts.
"caleb wrote:
Since it needs 15 gigs of space, I put it on my external and it does not
boot up. Is there a way to make it boot up?"
From the original post, I would assume Caleb:
1) had already installed it on some type of external hard drive
(usb/firewire/nas)
2) since he had installed on an external drive, his computer should be
more than compatible for recognizing and booting from an external drive
outside the windows environment via the bios.
3) needs to find a way to boot from this drive.
To tackle the original problem, Caleb's must have recognized the drive
outside windows for it to have installed on to it from the Vista install
process. He needs to check the boot order in his bios first. If that
fails, he needs to consider a boot manager program like GRUB that can
boot from other types of interfaces.
I originally omitted nas drives from the list of possible only because
many people do not even know they exist nor know how to interface with
them in windows let alone from a boot manager.
I appreciate what you and others are suggesting; however that is not
what Caleb asked.
-Luke