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Jul 15, 2020 at 15:54 comment added Matthew Thanks for your responses! Bummer. I wonder if Keynote will run in Mojave — I bet not, though. I remember that I upgraded to (Sierra) 10.12 when it came out and it broke a bunch of stuff, including Keynote's graphics (no presenting or previewing), so I downgraded to 10.11 and there I've stayed. Maybe Mojave lets it run (or run with modifications, e.g., like Retroactive: github.com/cormiertyshawn895/Retroactive).
Jul 15, 2020 at 3:49 comment added Allan You cannot install a version of macOS that’s older than the version it originally came with. If that 2019 came with Mojave, you can install Mojave and newer (Catalina). You cannot install High Sierra or older
Jul 15, 2020 at 3:46 history duplicates list edited Allan duplicates list edited from Install older OS X on latest Mac Mini to Is it possible to install an old version of Mac OS on a new Mac?, Install older OS X on latest Mac Mini
Jul 15, 2020 at 3:42 history closed Allan macbook-pro Duplicate of Install older OS X on latest Mac Mini
Jul 15, 2020 at 3:37 comment added kumowoon1025 I'd say no on El Capitan, will Mojave not work? Usually it's nearly impossible to install a macOS that is a major version older than the one the machine shipped with, at least since Tiger, iirc, and 16" MBP shipped with Catalina from the beginning.
Jul 15, 2020 at 3:20 review First posts
Jul 15, 2020 at 3:50
Jul 15, 2020 at 3:18 history asked Matthew CC BY-SA 4.0