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

Posted on May 9, 2021 8:04 PM

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May 10, 2021 10:55 AM in response to grgwrcrft

I am sorry, but I am uncertain as to what you were doing. What instructions were followed? Are you saying that you are unable to start up your disk because it can not find a functioning operating system? I suggest you click on the link below and read the information there, then respond with more detailed information. I am sure that someone here will then be glad to assist you. Thank you.

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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?

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