Feisty on an external hard drive (firewire)

I don't want to partichen my internal HDD. (60.1GB left)

I Think that is not possible with the default Ubuntu Kernel. It don't include the firewire drivers and other necessary modules for do it on initrd, although it include on the modules for load after boot. You could try to make a new initrd with your necessaries modules but it isn't trivial.

What is a initrd?

(i am not an linix guy.)

I think that you may forget it. ¿Can you make a tiny partition (about 100MB) on your internal disk? If you can do it, then you can put the /boot partition on it, and all the other Ubuntu system ( / ) on your external disk. I use this method with a 40GB USB external driver from dapper version.
Make a new initrd is more difficult for a no experience Linux person.

can't i use a fire wire hdd once i boot ubuntu from the (100MB,1GB,2GB) Partition?

Jacob

You can use a firewire disk with all ubuntu system if you wabt with a simple /boot partition (about 100MB) on your internal system disk.

so you are saying that i can't boot of a fw400 HDD but once booted i can save my files on to it?

or could i boot off of a high speed usb hdd?

Is very similar boot from USB or boot from FW. However, on the Feisty roadmap you can watch the usb booteable. You could try with it, or you can use a /boot partition on a cheaper usb-pen drive.
When you could try all this ¿ Can you tell us your experiences?

I heared from a best buy guy t hat he has booted ubuntu of of a FW400 Hard Drive and an ipod.