I HAVE BEEN TRYING FOR 4 HOURS TO GET RID OF Big Sur AND RETURN TO CATALINA. ANYONE HAVE A SOLUTION. APPLE'S ADVICE WAS TO TAKE MY 27" IMAC TO A REPAIR SHOP. THEY KNOW THAT THERE IS A FLAW WITH THE LATEST UPGRADE YET GAVE ME THAT ADVICE. SOME SUPPORT
iMac 27″, macOS 10.13
FWIW Big Sur installed and is running fine on my 2015 27” iMac. I would suggest that you restore your iMac from the Time Machine or other backup that you were instructed to make before you upgraded.
FWIW Big Sur installed and is running fine on my 2015 27” iMac. I would suggest that you restore your iMac from the Time Machine or other backup that you were instructed to make before you upgraded.
Thank you Mike, I'm on that right now.
upgrading to Big Sur is a monumental disaster
