I am planing a hard drive upgrade to my 2008 MacPro. Currently I have OS X on one Hard Drive and Windows 7 on a second Hard Drive. I am upgrading my OS X boot disk to a 1 GB Western Digital Black. I plan to partition it into 2 500 mb partitions. The reason being I keep a clone of my boot drive on a external 500mb drive. Is there any disadvantage to putting windows on the second partisan or is it better to keep it on a second drive.