Hi, I recently used bootcamp to petition my hard drive to have 32 gig for windows. When going to install windows it asked me which petition to install it on however the peition it gave me was not the one i made with bootcamp so i canceled the installation. Now when i start my macpro up it doesnt even go into the OS system it just comes up a blank screen with a white flashing line up the top in the left hand corner like dos. Now I figure its trying to load into windows however i never isntalled it but i cant get into the OS system even when I hold down the option key. Any suggestions to how i can.?