I have Windows 7 installed on my iMac via bootcamp. When I want to switch between OS X and Windows by holding down the option key on my Apple wireless keyboard it does not work, it always boots back into OS X, though when I use a usb keyboard I can switch between both operating systems. My question is, should I be able to switch using my Apple bluetooth wireless keyboard or is the reason it's not working is because a usb keyboard is needed?