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The T2 chip is a custom Apple chip that handles the security functions for APFS encrypted storage, TouchID and secure boot. It also integrates other functions like SSD, systems management (SMC) controllers, and well as audio and image processors.

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2019 MacBook Pro 16" T2 Security Chip question

Mac computers with the T2 chip have a feature known as Secure Boot, which prevents booting from external drives. …
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T2 Mac with empty internal storage won't boot from install USB

Do you have another Mac? You can still use Target Disk Mode on these Macs, without any security problems. So you may be able to install an OS or restore a backup that way. Once you've got an OS on the …
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1 vote

Macbook, Can't boot from USB because has no administrator in startup utility

The disk (that you erased) contains a 'Secure Token' for the admin user. You need to recreate it before you can change the settings. First, reinstall the OS using Internet Recovery. Or install over Ta …
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1 vote

How to re-install macOS on Mac Mini 2018 where Internet Recovery fails and USB boot is forbi...

Erasing the entire device on a T2 or M-series Mac will turn it into a brick. …
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