Hi, I installed linux Ubuntu to my 4GB USB drive. Then I was trying to boot the USB drive using rEFIt on a CD on my Macbook Pro 2010 base. That failed and all I got was a white blinking - on a black screen. Now I tried to boot windows using the normal "option" boot menu. I got the same thing. I tried going into the partition thing in rEFIt and it said everything was synced. How do get into Windows 7/Ubuntu?