USB Boot of macOS Tahoe: A Practical Guide

Apple’s operating systems have long supported installation and recovery through bootable USB drives. For enthusiasts, system administrators, and repair technicians, creating a USB boot drive can be a lifesaver when reinstalling macOS, troubleshooting startup issues, or performing clean installs. With the release of macOS Tahoe (Apple’s next-generation operating system), USB booting continues to be an important method of system setup.

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How to setup a USB boot of macOS Tahoe

With the new security settings in macOS Tahoe, it’s becoming harder to setup a clean boot drive for macOS. Even with an intel machine the boot to an external drive seems to becoming to an end. With silicon machines you boot from the power button unlike Intel using the  Command (⌘) key. Both sequences give you the option to boot from an external drive. For Silicon you do need to turn off the Security Policy otherwise it will just sit there.

The two options you can use are clone an existing ext drive boot to that and run the macOS update. You do need a machine that can take macOS Tahoe. Currently all silicon (M1-4 chips) can do this. The second option is start with a clean machine run macOS Tahoe update once completed on the machine plug in an external drive and clone the Mac OS over to the ext drive using a software like Carbon copy cloner. Once completed always test your work I.e check it can boot to the external drive.

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