I have a MacBook Pro and I am looking for a way to run another OS X Yosemite inside it.
I tried Virtual Box, and installed OS X, but it doesn't support guest additions for OS X guests. It keeps the display at 1024x768 and the mouse moves very slowly.
What is the best way to run OS X inside another OS X? Note that I have a legal OS X and I am not talking about Hackintosh!