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Booting into Monterey on external SSD

I have an external SSD with the current version of Monterey, which I can use to boot my 2019 Intel MBP. The system was installed from the Intel Mac. I was wondering if anyone knows if I can use this same external SSD to boot into an M1 MBP, assuming I've reduced the security settings in Recovery.


Thanks very much for any guidance.

Posted on Jan 18, 2022 3:24 PM

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Posted on Jan 19, 2022 6:42 AM

The answer is no. I have Monterey installed on an NVME disk on my 2013 MacPro. I connected it to my 2020 M1 MacBook Air.

It was recognized as a startup disk, and when I selected it to be the startup disk it asked for credentials for users on the NVME disk,. I entered those and then got message that the the NVME installation was not compatible and that I had to reinstall macOS via Recovery. I declined that and unselect the VME disk as startup, ejected the NVME disk and reconnected. it to my MacPro and the MacPro still works fine.

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Question marked as Top-ranking reply

Jan 19, 2022 6:42 AM in response to Tom Wolsky

The answer is no. I have Monterey installed on an NVME disk on my 2013 MacPro. I connected it to my 2020 M1 MacBook Air.

It was recognized as a startup disk, and when I selected it to be the startup disk it asked for credentials for users on the NVME disk,. I entered those and then got message that the the NVME installation was not compatible and that I had to reinstall macOS via Recovery. I declined that and unselect the VME disk as startup, ejected the NVME disk and reconnected. it to my MacPro and the MacPro still works fine.

Booting into Monterey on external SSD

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