Questions tagged [t2]

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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Is it possible to install Ubuntu on an external SSD on the 2019 16 inch MacBook Pro?

I'm considering buying the 16 inch 2019 MacBook Pro because I need a powerful x86 machine that can run macOS, but I would also be interested in running other operating systems on this computer. I know ...
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Macbook Pro 16 Failed to boot after Big Sur update now I'm unable to mount the disk even in recovery mode

On reboot it showed the cannot boot from hard drive ? screen. I rebooted into recovery mode but it fails to mount the drive. I can see the drive there with the correct details. It says the following: ...
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How to send Data block to t2 chip Secure Enclave Processesor [closed]

How to send data block to t2 chip Secure Enclave processor to use its AES engine for encrypting/decrypting data using its Hardware keys. T2 chip don't share keys to anyone. So I think the only way ...
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Mac mini (2018) Macmini8,1 Linux usb-c will not recognize certain usb device types

The Mac mini (2018) Macmini8,1 is running Linux with rEFInd. The mini has 2 usb-a 10 Gb/s ports, and 4 usb-c 10 Gb/s ports Problem: On usb-c ports, "dangerous" devices are not recognized by ...
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How to dual boot an iMac 2020, 27", T2 from (Catalina & Mojave)

I need to add a Mojave partition to my native Catalina iMac 2020, 27", T2. To date all attempts to boot from a Mojave external install drive have failed. "Secure Boot" is set to "...
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bridgeOS not updating?

I just updated my Mojave machine to Security Update 2020-006 but my bridgeOS has not updated, it remains on 18P50347c which I got when I tried Big Sur DP4/PB1 on 7 August 2020? I don't have any other ...
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MacOS Catalina 10.15.7 is causing a Kernal Panic - Forced an update to T2 chip by installing Big Sur - My machine is now bricked

So only in the last 2 weeks has my Macbook Pro 2018 starting having this kernal panic problem. I was on 10.15.7 and after disabling the power nap and vault encryption suggestions I still had no luck ...
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T2 Chip/Filevault 2 Isn't Asking for Password Before Unlocking System Drive

I have a 2018 Mac Mini with an encrypted system volume that should only be unlockable by a single user. It used to be the case that when I started up my computer I get a brief apple logo then see a ...
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146 views

Macbook pro 16inches 2019 fails to reinstall catalina on recovery mode after erasing hard drive, and T2 chip dissallows to boot from external drive

hope you can help me here. My MacBook Pro 2019, 16 inches, with a T2 security chip, systematically times out when trying to reinstall Catalina in recovery mode, after erasing the main drive. The T2 ...
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OS Catalina Recovery mode: “Downloading installer information to the target volume failed”

Specs: Apple MacBook Pro 16-Inch Core i7 2.6 2019 - MVVL2LL/A* - MacBookPro16,1 - A2141 - 3347 - SSD Drive I just got my MBP from service, it just had a software problem preventing it from powering up,...
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rEFInd installation won't boot due to T2 security, despite T2 security being disabled

I've been trying to install rEFInd with --ownhfs on my Macbook Air 2019, but booting into it results in Recovery Mode starting with the message A software update is required to use this Startup Disk. ...
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Macbook, Can't boot from USB because has no administrator in startup utility

When I was going to ReInstall a fresh copy of Catalina MacOS on my Macbook pro 2019 16 inch, unfortunately I deleted all partitions instead of erasing them. As my internet connection is so unstable as ...
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2019 MacBook Pro 16" T2 Security Chip question

Dont have much to go on here, but im curious to hear anything from those who might have some ideas. So for the past 4 days my computer has been at an apple authorized service center and authorized ...
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Can't reinstall OSX after wiping with intermittent interent; T2, Startup Security Utility, no admin

I wanted to wipe and reinstall my 2018 MacBook Air with a T2 security chip. I am running into a problem with an intermittent internet connection. I erased the Hard Drive in recovery mode with Disk ...
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777 views

What is this green symbol on the touch bar?

I've seen this green symbol on the touch bar of a MacBook Pro, as shown in the image below. I have no idea what it could mean or what it signifies. Some details about it: It only comes on when the ...
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How can the check point on startup for macOS's T2 chip authentication be bypassed for securely signed OS's like RedHat?

How can the checkpoint on startup for macOS's T2 chip authentication be bypassed for securely signed OS's like RedHat? I know after both drives within, say macOS Catalina for example, are mounted ...
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How to update bridgeOS without internet connection?

We recently tried to update an air gapped Mac Mini 2018 with the 10.14.6 Combo Update. It failed because the bridgeOS version was too old. On an internet connected Mac it just downloads the latest ...
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367 views

How to clean install of MacOS on 2018 MBP

I have a 13" 2018 MacBook Pro. My System Integrity Protection is off, and T2 security is set to None. After an update to MacOS Catalina 10.15.3, my mac would stay at the bootup screen with an apple ...
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Mac with T2 chip, downgraded from Catalina to Mojave, has anyone got a working Recovery?

Recovery does not work after downgrade. cmd-R goes to Internet Recovery instead of internal Recovery Internet Recovery goes error '-1008F' I've disabled Find My Mac and not rolled in the beta ...
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221 views

Behavior of macOS After Toggling Secure Boot on T2 Chip: Does It Remember the ECID?

I am reading up on the T2 chip as I look at plans to avoid multiple machines by consolidating various OS requirements onto a single computer. It sounds like I can use Full Security for Secure Boot in ...
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2k views

Can the Apple T2 chip be used as a TPM to enable BitLocker?

I have a 2019 MacBook Pro, with the Apple T2 Security Chip. I have installed Windows 10 via Boot Camp, and that is working well. I would like to turn on BitLocker in W10 and take advantage of that ...
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T2 chip on 2018 Mac Mini causes booting Mac OS via Refind bug after unplugging power

Recently received new shipment of T2 2018 Mac Minis at work. I had to install the refind boot picker on them. Install is straightforward and successful but for some reason once I unplug the power ...
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MacBook Pro 2019 Touch Bar lagging when Changing Volume

I have a 2019 MacBook Pro 15 inch with touch bar. I change the volume a lot when watching youtube videos. This makes the Touch Bar lag and then crash. This has been a major issue since I was ...
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149 views

Restoring CCC or TimeCapsule from MacBookPro (2017) to new (2018)

I had a MacBook Pro 2017 stolen. Luckily I have 2 backups: Time capsule (day old) Carbon Copy Cloner USB hard drive (30 days old) MacBook Pro 2017 was running Sierra (or High Sierra?) now I forgot ...
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Set default boot disk to USB on macmini with T2 chip

I need to setup boot always from USB stick. I can boot it from USB by pressing Alt and selecting specific source. Buy how to do it permanently? Is is possible?
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Can I use the whole internal SSD for Boot Camp on a T2 based Mac (Mac mini late 2018)?

TL;DR Can I safely install Windows 10 on the entire internal SSD on a T2-based Mac (mini) rather than splitting the drive space between macOS and Windows? Is there a particular method for this that I ...