Cannot upgrade from Catalina to BigSur on MacBook Pro 2014
Twice it finished the upgrade with no errors. But the upgrade wasn't there, still on Catalina.
Any ideas?
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Try the following:
1 - make sure you have a minimum of 30 GB of free space on your boot drive. More is better.
2 - go to the Applications folder and look for any "Install Big Sur" apps and delete them.
3 - boot into boot into Safe Mode by booting with the Shift key held down.
4 - install Big Sur from there.