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MAC RESTART CHOOSE STARTUP DISK MAC

No attempt with running the full installer for 12.1 would proceed past the “no owner” dialog, when run from my internal volume macOS, or booting to the installer USB until I erased the external ssd system volume and performed a clean install and migration. I wish I had run “bputil -e” to see what info I could obtain, but I did not think of it at the time. I forced a shutdown with the power button after waiting an appreciable amount of time, and with the reboot, the Recovery Assistant ran, presenting only the internal drive macOS.

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The Mac mini would not start the external drive Recovery, and stalled with a blank screen (even the video where you can detect the backlight with a blank screen would not come on). (This, by the way was the final time that I would be able to boot off my external drive, as my next step was to shutdown my M1 Mac mini and boot to Recovery by holding the power button. My next step downloading the full installer from the Mac App Store, and then running it for the external ssd macOS update, which also failed due to no ownership.

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Sending my wishes for a happy holiday season and new year to you and all your followers.Īs a matter of fact, it might have been 2 factors: 1) The initial attempts of running Software Update did fail, providing the no Owner dialog box, as you received, and entering the requested user and password did not work. I had a thought that maybe the issue could be resolved by adding an owner using the Info dialog box to the Data volume of the system having ownership trouble, but I don’t think that is possible. I hope Apple has been working on swatting the volume ownership bug, as it has been quite persistent. I also had a similar issue trying to update a 12.0.1 external volume on my Intel Mac mini 2014. I was not able to try repairing ownership by selecting my external volume as a startup drive – it had disappeared from the Startup Drive pane selections. I wound up erasing the system volume in One True Recovery (for my working macOS internal volume) and clean installing 12.1 followed by migration from a Time Machine backup.

In addition, I was unable to boot the that volume, and apparently, the recovery system was also corrupted. I just went through a problem where my external ssd Monterey 12.0.1 volume had no owners. This has been eased in Monterey 12.1, but there are still occasions when there’s a dance of boot volumes, for which this remains the best solution. While that takes you through the same process of authorising a user for that boot disk, in macOS this was successful, and didn’t cause an endless loop.

The workaround is to select the internal SSD as the boot volume, restart from that, and there use the Startup Disk pane to change the boot volume. When I did this, the dialog confirmed success by placing a green tick against the newly authorised user, but continued to refuse to boot from the external disk, reporting yet again that the volume had no authorised users. This problem usually reflects an ownership issue, and should be resolved by authorising the current user for the boot volume. When I selected one of the boot volumes in Recovery’s Startup Manager, it warned me that the volume I had chosen had no authorised users. In macOS 12.0.1, I’ve experienced problems getting ownership to work with an external SSD containing multiple boot systems, which had previously worked smoothly. Although this has come a long way since, it still isn’t without the occasional glitch. Prior to macOS 11.4, those problems were often so severe as to prevent booting from an external disk altogether. M1 models also require that all boot volumes have an owner, and ownership has been one of the more troublesome features of external boot disks. There are two main methods available on M1 models: the Startup Disk pane in macOS, and entering Recovery, where a different Startup Manager can be accessed either from the opening screen or later in the Apple menu.

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Unlike Intel Macs, M1 series Macs can’t enter Startup Manager, to pick a boot volume early in the boot process, using the Option key.

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