So I was trying to install windows on my Imac using bootcamp, and everything seemed to be working fine. I put in my Windows CD and pressed contenue, it then loaded me up to the windows instalation page and it told me that I could not use the Bootcamp partition to put my windows OP on, because the partiton needed to be NSF or something like that, so I highlighted the Bootcamp partiton from the menue, and then clicked the partiton buttion, after I had done that, it was then able to install winodows on that partiton. After the installation was complete, my Imac now only boots up the windows operationg system without any option to what opteratng ststem to be booted. What do I do?