My windows 7 keep growing so now I want to increase the size of my bootcamp partition. I made a win clone backup and somewhere I messed up the HD partition. I tried deleting the bootcamp and making the entire drive OS then I was going to make a new larger partition but I get an error message and can't do it. What do I do next. reformat the HD and reload my OS backup on it and try again? I have a carbon copy clone of the OS partition on a bootable external HD. How do I format the internal HD? boot from the external?