I am trying to get a bootable copy of BT3 working from a new USB key (8Gb), To save myself time I decided to try and set it up in xp (just run the .bat). I formatted it, extracted the iso to the USB key, ran the .bat.

However when I now try this on the computer I am trying to use BT3 on it just says "operating system not found". This is obviously after I have hit the boot menu and chosen from the USB key.

Am I being stupid?