I am trying to install Windows 7 on my second internal HDD on my Macbook Pro. I tried to use an external optical drive for the windows disk, but after bootcamp formatted the drive and the computer restarted, I would get stuck on a flashing off-white screen with the Apple logo and a circle with a line through it flashing on and off. I then tried to do the same process but with a flash drive, and the issue still remains. How should I go about running windows on my second HDD via bootcamp? Thanks!