Quote Originally Posted by DELTAprime View Post
Your adding in some extra steps there. First you can jump straight from Windows to OSX through the Bootcamp settings in Windows, no need to swap cards to see the UEFI. Second you DO NOT have to reinstall Windows 7 to install Windows 10. Microsoft updated Windows 10 so that it accepts Windows 7 and 8 keys as activation for Windows 10.

http://windows.microsoft.com/en-au/w...-in-windows-10
Bootcamp software won't install directly on Windows 10, doesn't support Win10 on my machine (trust me, I tried) - that means I'd have no boot into Mac option, requiring a UEFI compatible GPU to access the boot menu upon reboot, hence the install Win 7, Bootcamp, Win 10 procedure.

I really do make things hard for myself.

As for the serial key thing, I guess I hadn't run the latest updates at that stage.