04-18-2025, 01:11 AM
I had been unsuccessful in creating an external boot TB4 ssd for my M1 MBP. None of the procedures from Apple would work with Sequoia 15.4. Diana had been having a similar problem as discussed in this topic:
Ownership of an external boot drive, part 2
This week Apple released version 15.4.1 and I updated my MBP and also downloaded the installer. I erased the ssd and ran the installer, and to my amazement it worked. I then used Migration Assistant to move my stuff over from the MBP to the ssd and I now sit typing this with the machine booted from the ssd.
I take back all the bad things I said about Apple.
Diana, I hope this helps you.
Ownership of an external boot drive, part 2
This week Apple released version 15.4.1 and I updated my MBP and also downloaded the installer. I erased the ssd and ran the installer, and to my amazement it worked. I then used Migration Assistant to move my stuff over from the MBP to the ssd and I now sit typing this with the machine booted from the ssd.
I take back all the bad things I said about Apple.
Diana, I hope this helps you.