So right now I'm using a 2007 iMac with a bootcamp partition for use with windows. Next week my rMBP should arrive and I'm curious as to how easy the process of uninstalling windows from my old mac to the new mac actually is. The reason why I ask this is because of the activation code you use when installing windows. When I uninstall windows and delete the partition will it automatically deactivate the code? Does it take a few days? Do I need to call someone to deactivate? Thanks guys.