I have Data Doubler optibay so I need to use External DVD Drive to install Windows 7 Here is screenshot from Boot Camp Assistant: I want to install Windows 7 to my 2nd Drive. But I don't want to waste all my 500 GB to the Windows. So I need 4+1 partitions in 2nd drive. 4 partition must be Apple partition and last partition must be for Windows I tried to install with rEFIt but rEFIt doesn't show my boot up disc which is connected with USB. What should I do now ?