They officially say it can become 'not bootable' if the interrupt occurs during system update. BUT I've got it 'not bootable' without any power interrupts during the very first day.
After simple reinstall attempt without any power interrupts this sh..t didn't boot at all !!!
It showed black screen with big exclamation mark and url to support which basically says ... go find another Mac to boot this one ... (https://support.apple.com/en-us/HT211868). Thanks Apple! Very nice advice with COVID situation
The irony is I bought this one as 'another Mac' to fix the previous one that have fallen apart. You can dig in my comments how. https://news.ycombinator.com/item?id=25809097
I would really prefer simple booting from external drive at this point.
This is the buggiest thing I EVER had. Even the screenshot doesn't work properly. It reacts to(CmdShift-4) after ~2!!! second delay while on previous Mac it was instant.
"Very fast" some say? I still wish to see it, because so far it feels just like the one I had before or slower! I am not talking about benchmarks, I am talking about day to day experience.
And there are bugs bugs and bugs. I have stopped counting honestly. Just another one as example: Playing something in Garage Band and going to settings gives dialog saying sound engine was not able to process ... I never saw something like that before.
And of course enormous amount of useless dialogs with especially jumpy animation just to annoy you enough. It reminds micros..t more and more. I believe this particular 'dialogs feature' have been introduced in Vista? But Vista had another beautiful feature - erasing it and install something that works. Unfortunately here we do not have even this, because it simply would not boot !
Goodness, my feeling is: Can Apple make at least something these days that 'just works' ?