The T2 chip in newer Macs prevents booting from external drives. We solve the problem -

The T2 chip in newer Macs prevents booting from external drives. We solve the problem

The security of user data has always been a top priority for Apple developers. The released gadgets are equipped with both physical and software tools for encryption, user identification and file protection in case of devices falling into the hands of intruders.

The system has been regularly improved in this direction, but it seems that last year the Cupertinians were seriously overly clever.

We are talking about the new T2 chip , which is installed in almost all modern Mac models.

Why you need a T2 chip and what’s wrong with it

It all began in 2016 with the introduction of the first MacBook Pro models with the Touch Bar . Then the Apple T1 chip was responsible for the operation of this chip .

The module was extremely similar to the S2 board , which was equipped with the Apple Watch Series 2 . Both modules are responsible for data encryption and security. At the same time, the chip in the MacBook controlled the touchpad, stored the keychain, and performed a number of other less significant actions.

At the end of 2018, the Cupertinians presented a radically updated MacBook Air and a minor update for the MacBook Pro line. One of the innovations of these laptops is the new Apple T2 chip .

In addition to the already known tasks of its predecessor, the new module is responsible for encrypting the SSD, controlling the system boot and allowing you to activate Siri on Mac using your voice.

T2 has a rigid connection to the Touch Bar and in case of breakage, the latter also needs to be replaced. Everything is like a bundle of Touch ID \ Face ID with the motherboard in the iPhone.

The most unpleasant feature of this chip began to be noticed by users who decided to reinstall the operating system on brand new computers. Apple T2 chip blocks Mac from booting from any external storage . Boot from built-in SSD only or Network System Restore.

So it will not work to install macOS from a bootable USB flash drive, boot from any other external disk with the deployed OS. Even third-party backup tools won’t work with this limitation.

Which computers are at risk

At the moment, a similar chip is installed on such devices:

  • iMac Pro
  • Mac mini (2018)
  • MacBook Air (2018 and later)
  • MacBook Pro (2018 and later)

You can check for the module along the path  – About this Mac – System report , in the Controller section the security chip installed on the device will be indicated.

In the current lineup of Apple T2 computers, only the iMac and Mac Pro are missing. Most likely, the line will be updated in the fall and the problem will affect all models.

How to fix the situation

Fortunately, the problem has a solution. The restriction on booting from an external drive is software and can be disabled.

Here’s what you need to do for this:

1. Restart your Mac and hold down the Command + R keyboard shortcut while turning it on . For desktops, you need to connect a wired keyboard.

2. After booting from the system recovery partition, select Utilities – Secure Boot Utility .

3. Click Enter password for macOS and authenticate with an administrator account.

4. In the menu that opens, we recommend changing two settings:

Set the security level to Medium for secure boot . This way, if macOS crashes on your Mac, you can run any version of the Apple operating system without a network connection. Otherwise, the laptop will have to download the installation image of the latest current system for the computer from the Apple website.

Below you should allow booting from external drives .

Only when these options are enabled, it will be possible to reinstall macOS from a bootable USB flash drive, start from another disk, or boot through a partition cloned on the disk.

If macOS is inoperable, the boot area is damaged, or the Mac drive fails without changed settings, reinstalling the system will be extremely problematic.

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Ninja Silhouette 9 hours ago

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Joe Doe in London?

Joe Doe in London, England purchased a

Joe Doe in London?

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