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A comment on Apple Silicon M1 chip in MacBook Air outperforms high-end 16-inch MacBook Pro. Parent comment

Re:Apple Silicon M1 chip in MacBook Air outperforms high-end... by dkonofalski on Thursday November 12, 2020 @06:45PM (#25076904)
That's not true at all. You can use recovery mode to trivially revert back to the OS that was installed when the computer was purchased. If that's pre-Mojave then you can just upgrade back to Mojave afterwards.
[ Parent | on HN ]
Re:Apple Silicon M1 chip in MacBook Air outperforms high-end... by lebca on Thursday November 12, 2020 @07:50PM (#25077436)
What if the Mac had a newer OS than Mojave originally installed on it? That is how I interpreted the parent poster's comment. Given this interpretation, I'm don't think I'd have the expectation to be able to install an earlier OS.
[ Parent | on HN ]
Re:Apple Silicon M1 chip in MacBook Air outperforms high-end... by dkonofalski on Thursday November 12, 2020 @07:55PM (#25077476)
With that interpretation, you'd be correct but I don't think you've ever been able to downgrade to something earlier than what it came with since the older OS wouldn't include the appropriate drivers or kexts to properly run the hardware.
[ Parent | on HN ]