So pre-2013 Mac Pros, just aren't up to snuff? Really? That's bogus. Mid 2012 is fine and should have been on the list, I don't have one, but if the Mid 2012 was on this list I would feel better FORCE Installing onto a 2010 or 2009 or even as way back as a 2006. But there are differences in the Mac Pro 2013 vs Cheese Grader. Lazy. 2012 should be on that list.