Hi, I am trying to install MAC OS on my Latitude 6410 Laptop but am having trouble with installing High Sierra. It is having trouble with USB controllers as it is stopping at "Still waiting for root device". I want to try and use Yosemite instead but cant find how to download the image. I have High Sierra installed on another Laptop but can find Yosemite in the app store. Is there anyway to get the image anther way that will work with Unibeast?