Quote:
Originally Posted by JFreak
That's pretty much a given.
2019 -- oldest compatible 10.12
2018 -- oldest compatible 10.11
12.8 -- oldest compatible 10.10
12.7 -- oldest compatible 10.9
So unless there is Catalina support this year (not likely) we can assume 2020 requires 10.13 or later
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That would leave me out. I run 10.12.6 on one boot partition and OSX 10.10.5 on the other. I've gone nuts trying to get answers to the question of: if I upgrade the Sierra partition to High Sierra with the firmware update that happens with HS what if anything will that do to my OSX 10.10.5 partition. I need the latter so B4-II can be used.