After moving and deleting everything from Drive B and reinstalling ML now boots fine without the USB booter. Thank you so much for your help and advice. Now to try and get the audio working.......... :thumbsup_anim:
Have you tried VMware? I got it to install fine on that, the only issue I found is VMware can only use two USB ports at a time. It's not a truly viable option for usage though.
The amount of support on here is surprising though. You would have thought a community as big as this would have swathes of people helping each other to achieve the same goal. Instead it seems it's just hoarded of people looking for advice and not getting very much.