This is very odd. I'm trying to install Win 7 on my new rMBP. When I get to the step in the Boot Camp Assistant to set the Windows partition size, the slider maxes out at 84 GB. This is a 500 GB drive. I currently have 234 GB free on the drive according to the Finder. Why won't BCA let me get this up to 100 GB, where I want it?
Also strange: when the slider is at 84 GB for Windows (the max it will let me use), it says on the OS X side: "415 GB, 18 GB free". I don't understand where the space is going. Hidden restore partition?