macOS installs a recovery partition and hides it from you so you can always restore it.
I think the firmware boots you into a macOS mode so you can always recover your macOS system, but when you finished installation Linux may have nuked it.
I’m not an expert though, I’ve just been using Mac’s for 15+ years and have had to reformat several over the years.
I’ve never installed Linux as the primary OS before.
Hey boss, I’m logging this ticket as tech debt. We need to take this on to hit our marketing deadline, and as soon as the project is over we need two scrum cycles to resolve it.
Two years later…
This ticket has been open forever, can we just delete it since nobody is ever going to clean this up? It’s messing up our velocity metric.