Hey guys, i've tried reading up a bit and even watching some videos on this before I go ahead and try for myself. But I really just like to be 100% sure and get definite answers. Anyways... I recently purchased a 27" late 2015 iMac. I want to be able to dual boot for some light gaming purposes and because my CAD program is for windows. So from what i understand is that because I possess a windows 7 install key, I am able to download a free Windows 10 iso and use my key with that to dual boot? Charge free? I really just want to use Steam on windows, I can deal with not having CAD on this iMac. I am sure this question is super redundant, I just always second guess my findings and would like to be re-assured! Thanks!