Hello, After I was successful doing a clean install of Yosemite on my wife's Macbook Pro (my 1st time doing it) I felt encouraged and want to do the same to my Mac mini which is a bit buggy. Now the problem are 1. It's connected to a TV through HDMI 2. The keyboard and trackpad are wireless All of these spelled disaster in my Windows days. The BIOS part will not recognise TV, so never do a clean install with a TV. Always connected to a monitor. Likewise for wireless keyboard and mouse. It wouldn't know. You have to have them wired. With Mac, can I do it?