HTTP ISO boot fails when iSCSI target sanhooked, works otherwise

[robinsmidsrod]

You can only hook one drive at a time. There is a thread on the mailing-list talking about removing this limitation, but no solution has been reached yet.

You should instead hook the target you plan to install to and use Ubuntu netboot features to start the installer. I'm sure that the details you find at https://gist.github.com/robinsmidsrod/22...-ipxe-L318 should get you started, together with the additional details in the attached preseed file in the same gist. I'm not sure if the preseed is usable without changes on 14.04. It was created for 12.04. I had to modify it a bit when I upgraded from 10.04 to 12.04, so I assume you might need to tweak it a bit for 14.04.