I downloaded and installed Big Sur for my iMac. My machine had the black screen with the apple logo. When my normal screen returned, Big Sur was not installed and I still have Sierra. Any advice?
iMac 27″ 5K, macOS 10.12
Hi BF718,
It seems you're having some trouble installing macOS and we can help.
Try reinstalling again from safe mode:
How to use safe mode on your Mac - Apple Support
You can also try reinstalling macOS from macOS Recovery:
How to reinstall macOS - Apple Support
Good luck.
Thanks for using the Apple Support Communities.
Hi BF718,
It seems you're having some trouble installing macOS and we can help.
Try reinstalling again from safe mode:
How to use safe mode on your Mac - Apple Support
You can also try reinstalling macOS from macOS Recovery:
How to reinstall macOS - Apple Support
Good luck.
Thanks for using the Apple Support Communities.
upgrading OS - having issues.
