Not a big Windows user, but feel i'd get more benefit from dual booting my Mac than using my Windows licence on my Microserver, as I do currently. Way back had installed the Win 8 trial initially, then upgraded to full price Win 8 when it was launched. Iirc I did it via the MS download option ie I don't have a DVD version, tho am sure I must still have the download file somewhere. Recently upgraded to Win 8.1, again via download and so still no DVD! So my question is in 2 parts; 1. Will MS 'allow me' to effectively move my copy of windows? I'm no Windows expert, but i think i remember that sometimes there are unexpected restrictions! 2. If yes then how do i go about installing onto the rMBP - do i need to do a 3 stage install - Win 8 Trial, Win 8 proper on top and then finally Win 8.1? Or can I somehow just go straight for Win 8.1?