I am trying to create bootable USB to install windows 7 on my 100gig windows partition (on my macbook pro). I've tried multiple methods. For example, i've done the method that involves terminal with the dd if=path to iso of=/dev/diskN bs=1m (https://help.ubuntu.com/community/How to install Ubuntu on MacBook using USB Stick), and i have also used software that does that automatically instead of manually. i have managed to prepare the iso's contents onto the usb this way without problems, but when i boot my computer holding alt, the usb doesn't appear as one of the boot options. it seems as if all the tutorials i have looked at just expect the usb drive to appear as a boot option when you restart your mac while holding the alt key, yet that hasn't been the case for me. In addition, i looked at bootcamp assistant's "Create a Windows 7 install disk" feature, but i am unable to check it off. In sum, i have a 8gig usb drive and a windows 7 iso. All I want is to use the usb to install windows 7 onto one of my partitions, no more, no less. Please help!