Unable to boot from USB Mac I am running OS X 10.9.2 on a late 2011 Macbook Pro. I created a Windows 7 install usb using bootcamp successfully but the startup screen is not recognizing the usb on reboot. Please help.

Note: I had to create a 30 GB windows partition manually as the bootcamp option for the same was disabled.
https://www.youtube.com/watch?v=IQIaDO9nR6Y&amp;t=639s
I have used the process shown in this video for booting Ubuntu on Mac several times, I think this should work for windows as well. Give it a shot.. Hope this helps.