On my mac pro, I have Windows XP partitioned by Parallels. That works fine for most of what I need Windows for, but for gaming I need to run Windows XP via Boot Camp. I'm not too worried about the disk space on my Mac Pro, which has 2 TB of storage, but I just bought a MacBook Pro and that will only have 160 gig. To run XP via both Parallels and Boot Camp, do I actually need two partitions, or can I run the Windows XP virtual machine from Parallels using the XP on the Boot Camp partition? And...if I am running Windows XP on the same machine in two different partitions, will I need two separate licenses?