Booting off of USB to install fresh DDOS when it is auto booting off of the local drives.

Installing fresh DDOS is done off of a USB drive. The EMC documentation just says to insert it, reboot, and it will boot off the USB drive. For me it bypassed the USB drive and booted normally. At least on my hardware it took pressing F11 at boot time to get an option to select the USB drive as the boot source.