Install Monterey on 2012 Mac Pro 5.1 mvme without OC

[culser]

any one successfull installed Monterey on a 2012 MP 5.1 to a MvMe bootable
without using Open Core.

 

[StoneJack]

😩

 

[mrkapqa]

if you want easy install of MacOS , i suggest you install Mojave on a fast NVME and you will enjoy your MP5,1 very much.

Create a bootable installer for macOS

You can use an external drive or secondary volume as a startup disk from which to install the Mac operating system.

support.apple.com

if you need then newer software, you can still upgrade to Catalina (with help of Dosdude1 Catalina Patcher).


if you still need / want newer software, MacOS, you would have to install MacOS via Opencore; but would suggest you do that on a second drive, if you have never done it before.

an easy way to start is via OCLP

 

[culser]

nope i got. needed to do a bootROM cleaning. Then install w/ OCLP ...