Anyone manage to install macOS to an external( USB ) Drive( M2 ).

[helenavelikaja]

I have done two successful installs today onto external Samsung T5s today with Full Startup Security and SIP enabled. This was a Mac on Ventura and I installed a Monterey (older OS) and a Ventura volume without problem. I did both from a bootable installers, not Recovery.

EDIT Caveat....my tests were using an M1 MBA. Have not heard of any differences for M2, but cannot personally vouch for that. There is no suggestion that M2 are any different from M1 in this detailed article.

I've tried to do exactly that, used an external Samsung T5s as a Monterey installer to downgrade my new M2 running Ventura. But it doesn't work, and it doesn't give me much in the way of error message, just "the update cannot be installed on this computer." Do you have any ideas what I could try?

 

[TzunamiOSX]

What M2 is it? Perhaps Ventura is the minimum System for this Computer.

 

[helenavelikaja]

I'm afraid so indeed :'
It was shipped with Ventura. Does that mean my fate is sealed?

 

[CoastalOR]

I'm afraid so indeed :'
It was shipped with Ventura. Does that mean my fate is sealed?

Your question can't be answered until you tell us which M2 Mac.

 

[helenavelikaja]

Oh, right It's a 14" MacBook Pro 2023 Apple 2T Max. The operating system it says in the "About this mac" window is Ventura 13.0

 

[CoastalOR]

The minimum Apple supported macOS is Ventura for a 2023 M2 MBP.

 

[helenavelikaja]

Ok thank you. I feel slightly less crazy for not being able to install Monterey.