The reboot screen could use some improvement. 

A) The text says to press <Enter> to reboot your system. Since 
I was navigating with the mouse (as would 90% of users), I look 
around for an [Enter] button. But the button says [Exit], which 
has no relation at all to the text.

I think the screen should say something along the lines of.

 "Please [remove any install media...] before continuing."

After all, the user figured out how to get through about
20 screens until now without being told how the navigation
buttons works.

And the button should be [Continue], [Next], or 
even [Reboot]. But [Exit] really doesn't convey what the user
is going to do. And doesn't match the text.

B) The text says "If you created a boot disk during installation
as your primary install media..". But the installer knows perfectly
well that I didn't!