> I have to admit that not being able to boot from an external drive really caught my attention. You can boot from an external Thunderbolt drive, it's USB driv

> I have to admit that not being able to boot from an external drive really caught my attention. You can boot from an external Thunderbolt drive, it's USB drives that people have been having trouble with. >In researching the process, various Mac users have found success with non-Thunderbolt 3 drives, but under oddly specific circumstances without any real rhyme or reason for them working. Save yourself the time and just use a Thunderbolt 3 drive from the outset. https://appleinsider.com/articles/21/01/03/how-to-boot-an-apple-silicon-mac-from-an-external-drive https://appleinsider.com/articles/21/01/03/how-to-boot-an-ap...