I recently purchased a new 120 Gb hard drive. I formatted partitioned and installed my os and programs on the new drive and it's working fine. Recently I read an article about having multiple os's installed on one computer. I guess it rquires the drive to be partitioned. I wanted to know if this is something I can explore now or would this have to be done at the initial setup phase. Is it required to have third party software to do this, or can it be done manually?