Does that work normally? I'm trying to just use the official image, but it pretty much failed. I'm now doing it again, hopefully this will work. Also, USB Thumb drives for booting is shit. If you fuck your USB Drive up while trying this, use HP USB Format tool to restore it. Yes you just can use a DVD. They are 99% the same however thease DVD's have a shitload of drivers pre installed. and bootloaders enz are also added.