My rMBP13 running Yosemite is my main machine. I want to try out Yosemite to make sure that all of my work applications are compatible with El Cap, so I've been reading about installing it as a separate partition so that I can safely play with it. Here's my question: if I do that and everything is okay, do I then just uninstall/delete the Yosemite partition? Or is there a way to combine them? I've never done this before so I want to make sure I am doing things right. Or is there a better way altogether?