IMacs with the T2 Security Chip

[vasileios]

Hey @Fire!
I responded to your request in the previous topic you asked about it.
See the attached link:

Most Secure or Not

Hey @Fire and welcome to the forums! I gave it a shot, personally, but I didn’t persist too much on the subject. I did a test on my T2 MacBook Pro 16" a few months ago. There is a process to allow booting from an external drive, which you’ll need to activate in the “safe” boot mode of macOS, under the security settings. I’m including a link on how to do that in the end of this post. This allowed me to boot Linux from the USB. One thing you should be extremely careful of, when you try an instal…