Hi,
I've tried all the guides and read all the forum topics to get Kali on a Chromebook but it still doesn't work.
The Chromebook is a Samsung XE500C21.
Ive put my BIOS in dev mode, copied the img to a sdcard with dd, repaired with cgpt.
At the "sad face screen" OS verification is turned off I hit CTRL+U.
After a couple of seconds I get a new screen with the message "The device you inserted does not contain Chrome OS."

Tried other sd cards, USB sticks even tried win32diskimager to write the img file to the sd card or USB stick. Nothing worked, keep getting the same screen.
Any suggestions?