If you are running multiple monitors with Windows 8, you might want to change the screen that Metro shows up on when you press the start button. You can do this a few ways without setting the secondary screen as primary, the easiest way I have found is as follows:
- Open a Metro app e.g. Mail
- Move it to the secondary screen by grabbing it at the top and dragging it over
- That’s it – press Start again and Metro shows up on that screen now.