Hi and a very pleasant day everyone. I have with me a white unibody 2010 Macbook (a1342). The device has no OSX installed and I would like to do a clean install as I have El Capitan installer on bootable usb thumb drive. The problem I am having is that Its not detecting the usb. Upon Holding the option key (alt) it only comes to a white screen with cursor. When I plug the usb into a later macbook such as; the aluminum macbook pro, the usb installer is detected and ready to clean install mac. Is there a way I can enable usb boot? or are there any third party software that can enable booting from usb?