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Recently upgraded from a Mac mini Intel with external boot drive to a M2 mini where my macOS was on the T7 drive and I switched it from the usb a connector to the usb c connector.

Had a dickens of a time to get Sonoma to install. It would go the install and reboot and then the drive would unmount and turn off. Eventually it would boot back to the internal and it would try again and again.
Switched back to the usb a connector and the installer worked fine.
System report showing 5Gb speeds.
Plugged the usb c cable and booted and it booted just fine and now it’s showing 10Gb speeds now.
I’m wondering if I can leave it this way or if I have to switch the plug for any major updates?
You’d think by now they would provide a firmware update to fix this.

Coming from Mojave to Sonoma it was a little rough transition. None of the email passwords come thru even though they were in the keychain file, have to manually look them up in keychain and type them in the mail accounts app.
Have trouble authenticating my iTunes purchases, movies wouldn’t play and I’d keep authenticating and it wouldn’t fix it in Apple TV. Dragging the movies on the app gave me success.

Also had trouble installing Sonoma because it requires internet access on the M2 installer, never needed internet access with the Intel platform. My hot spot was used up and had to trickle in the data and it had to download 1.5 gb of data before installing. Had the Sonoma installer already downloaded from Apple.
 
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