i am transferring two hard drives with two different OS to two different motherboards. The first hard drive is currently Windows XP installed and the other one has Windows 7. I am trying to transfer the HD with Windows 7 to the other motherboard which has the Windows XP HD and and the Windows XP HD will be transferred to the other motherboard. I know its really confusing and this also gives me a headache. :) Can anyone tell me if its possible?