Update: I did how ubuntu_tr told me to do. Ubuntu installs successfully. But when i boot with the HDD, this error shows up:
Error: Partition is undiscoverable Grub Rescue >_ [I could type some command here]
Any idea?
Orignal: OK, all I want is a bootable installation on my external HDD.
I want Ubuntu to boot on any computer I plug into. Is it possible?
Can someone point me to detailed instructions of doing so?