https://ubuntuforums.org/showthread.php?t=2278244 https://serverfault.com/questions/620754/ubuntu-desktop-14-on-poweredge-doesnt-boot-on-raid https://www.experts-exchange.com/questions/29026216/Booting-from-USB-A-Dell-PowerEdge-2850-Rack-Mount-Server-Question.html http://en.community.dell.com/support-forums/servers/f/1466/t/19463384