I have a 150 gig hard drive with Ubuntu 12.10 currently installed what I want to do is format the hard disk and make three separate partitions. A 30 gig partition for windows 7, a 4 gig partition for ubuntu 10.10 and the rest for my files. My concern was how to do this and if it were possible ? and will I be able to access my files when I booted either os
yes, it is possible to dual boot system with windows 7 and ubuntu. There are many posts and guides that can help you with it. Refer any of them.