So am i supposed to see an option for USB boot because The options i saw was the Internal eMMC and the UEFI shell. I dont see any boot options for USB. My Chromebook I am using is a HP Chromebook x360 G1/11 G6/11 (Snappy).
I am now trying to install Ubuntu now
try the suggestions in the FAQ
Update: I got finished with flashing the USB (took very long) and im now installing