4/26/2023 0 Comments Mac recovery from usb drive![]() ![]() I had never set a password for my mac T2 security. ![]() I waned to allow my Mac booting from external media (as this link ) but It shows me the error: "Authentication Needed - You will need to authenticate as an Administrator to change the boot security settings."Īnd when I click on Enter macOS Password I see this error : "Recovery is trying to change system settings. It says "Security settings do not allow this Mac to use an external startup disk". Now when I want to boot the device from the USB drive, I created a bootable media flash drive by these steps. As my internet connection is so unstable as much as I repeated installing the OS from the net, it was failing with different errors usually related to the network errors or usually it says can't decode raw data. When I was going to ReInstall a fresh copy of Catalina MacOS on my Macbook pro 2019 16 inch, unfortunately I deleted all partitions instead of erasing them. ![]()
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