I have a Saumsung 5 Ultrabook preinstalled with Windows 8, and am looking to do away with Windows completely, and install Ubuntu (So far I've been trying with 13.04 64bit). I made my LiveUSB using LiLi, disabled secure boot, disabled fast startup, enabled booting from CSM (I tried the UEFI and CSM option as well as CSM only), and changed the boot priority to go to my USB first. There where however 3 options, usb hdd, usb fdd, and usb cd. I didn't know which one to pick, so I put them all above the windows boot priority. Despite all of this it always boots up windows. The green light does however flicker on my usb when it boots, it that helps at all. I'm at a loss on what to do here, I've tried following everything I can find online. Does anyone have any suggestions?