It looks like 10.12 won't support mid-2009 MBPs, is that correct? If so, why not? Is there a major/core change that makes it impossible to run or is it just minor and it can be overcome? --- Post Merged, Jul 31, 2016 --- nevermind, should've searched before posting; found this http://forums.macrumors.com/threads/macos-10-12-sierra-unsupported-macs-thread.1977128/ someone delete this thread
Yes, that's correct. It seems to be completely arbitrary, since the Late 2009 MacBook is supported. At least, I haven't seen a good explanation.