Install Ubuntu to iSCSI target from USB drive

Hi all

Trying to setup my XBMC as diskless with little success so far.

I first tried to hook the drive I wanted to install to then boot from the ISO image.


This simply results in BusyBox loading, which seems to suggest that the ISO may be corrupt?

Then figured the easiest thing to do would be to boot from the USB drive as I don't plan on installing this very often.

Plugged in USB, set BIOS to boot PXE first with the following script


The installer loads but when I come to select the disk to install only my USB drive is there.
I have tried with 'keep-san 1' in my script with no luck here.

Could someone point me in the right direction?
Thanks