I have a Retina Macbook 12". I downloaded the .iso for windows 10 to my desktop. Plugged in a USB. Started up bootcamp assistant and it started to run. After about an hour it asked me to divide up the partition. I did. Then it rebooted after a few minutes to OSX. I look and see the partition was created but it has a 0 size. It's labeled windows. When I boot up and hold down option, only the Mac HD shows up. No windows option. So it sounds like everything worked except actually installing windows. In the bootcamp assistant the option is now there to only remove windows, despite it not being installed as far as I can tell. How do I get it to actually install windows?