This Disk is Locked (Mac OS Big Sur - Mac OS Catalina)
Hi guys, I tried the new Mac OS Big Sur Beta on my iMac 27” 2017, the problem is I accidentally wiped the entire Mac OS system in order to downgrade from Big Sur to Catalina. Now when I want to re-install Catalina it says that “This Disk is locked”, the continue button is grayed, I can’t click on it.
Any help?
iMac 27″ 5K, macOS 11.0