Samsung Chromebook XE303C12

First generation chromebook from Samsung in 2012. 

   

 

 Cannot boot from the USB 3.0 port (blue) - USB boot is only available from the 2.0 port. 

 Press CTRL + U to boot from USB or CTRL + D to boot from internal disk 

 low beep indicates that the machine cannot find a bootable image on the USB drive 

 Check that you have run sudo crossystem dev_boot_usb=1 dev_boot_signed_only=0 - the signed image flag is important and making sure it is low (set to 0) is key. 

 

 ArchLinux ARM 

 See Samsung Chromebook  

   

 LinARM Images 

 see Linarm