OK, so I just upgraded my Mac from an Early 2011 MBP to a new MBP Retina Mid 2015 15inch. It was a big hit to my wallet but I figure I will get some good use out of it. So, I migrated my Mac OS Mavericks over to the new Mac with little trouble. It actually upgraded to Yosemite while still keeping my software and most of my settings in place! Pretty cool! Bootcamp is a whole other matter. My old mac has windows 7 loaded on a bootcamp partition. The new Mac will not support any version of windows older than Windows 8. Microsoft will let me upgrade to Windows 10 from my legit copy of Windows 7 for free but I am in a queue and I don't know how long it will take (says could be a few days). Meanwhile I need to clean off my old mac and sell it before I move again by the end of this month. So I can't wait too long to upgrade my Windows just so I can migrate it over to my new Mac. Besides that, the new mac does not have a CD Drive and MS doesn't really have a good solution for creating ISO images of complete Windows systems. The whole process does not flow at all. I tried to load an unregistered copy of Windows 10 (ISO direct from Microsoft) and it installed ok, but it was really buggy and somehow I got a lot of adware too. Then, I noticed in the back up function and restore option for Windows 7 that I tried to use forgetting that the new Bootcamp does not support it. I would prefer to just port over an image of my Win 7 system but it doesn't seem possible. If anyone can offer a solution, I would greatly appreciate that!