How to fix your Mac when it stuck installing Big Sur without having backup....
So, if you reading this, then probably you tried to upgrade your macOS to Big Sur and it stuck while updating, usually close to the final stage. And on your display it looks like this or something like this with different progress bar progress. You probably tried to wait for a whole night but it doesn't helped. Even if you restart your computer it will be loading and then stops during loading without any chances. You may try to do a safe boot (holding shift key) and it moves further and pass the final steps until you will see the desktop but without any users available you will have only the option to create a new user and after reboot, it will turn to standard (not admin) and you will not be able to access your data, and your computer will work veeerryyy slow. But instead of wasting time trying to bite yourself elbow, I suggest you make real steps to save your data and make the system install complete and return back to work. First of all you need an external hard d...