I&#x27;m running OSX Yosemite on a 2006 Mac Pro 1,1. It wasn&#x27;t too difficult once I had the correct boot.efi, and it works flawlessly. With an SSD, a minor CPU upgrade, and a recent video card it&#x27;s nearly as fast as a 2013 Macbook Pro.<p>I&#x27;m thinking of switching it over to Linux though, I&#x27;m no longer happy with the direction in which Apple is headed, and I do nearly everything in the terminal and browser anyway.