Quote:
Originally Posted by KV626
OP's Mac Pro seems to be a 4,1, which is not compatible with Sierra. However a simple firmware upgrade can fix this - completely safe and harmless procedure by the way.
On a side note, Yosemite, for me, was the worst (except maybe for MacOS 7.5.2 back in the day  ) - El Capitan was pretty solid, and fast, Pro Tools liked it too. So far Sierra runs great, as long as these last few OSes are running on SSDs though, otherwise they're a pain... |
Agreed on Yosemite - when I tried it as a third partition on my system it made me want to take a flying leap off of it
Extremely unstable. That you're okay with EC is unusual given the reports here about it that have earned it it's nickname.