Followed instructions but get error: "bless tool was unable to set the current boot disk". What is a bless tool and how do I create a usable bootable disk - any suggestions?
Followed instructions but get error: "bless tool was unable to set the current boot disk". What is a bless tool and how do I create a usable bootable disk - any suggestions? Using Catalina 10.15.7 with an iMac 27 inch 2020 Processor 3.8 GHz 8-Core Intel core i7
iMac 21.5″, macOS 10.13