I was downloading/installing macOS Big Sur directly from high sierra. It stuck when I installing(?[after I select the disk]). It shows 2 hours 19 minutes. Does anybody know what is the problem and how to fix it?
Stuck downloading Big Sur
I had a similar problem a few weeks ago. It was because TimeMachine was set for automatic backups: when I set to Manual ( and disconnected the backup drive) the Big Sur download succeeded. Maybe this is your cause (and maybe not ☹️)
Regards, Michaela