blank screen after booting from USB

[Mohammad Gomaa]

I'm building ChromiumOS for Galtic360 (dedede), every time I try to boot from a USB I always get a blank screen.

Here's what I did:

1. repo sync
2. cros build-packages --board=dedede
3. cros build-image --board=dedede --no-enable-rootfs-verification test
4. cros flash usb:// ...
5. Enabled development mode, enabled debugging features on Chromebook
6. Opened VT2 and executed enable_dev_usb_boot and also:
   1. sudo crossystem dev_boot_usb=1
   2. sudo crossystem dev_boot_signed_only=0
7. Reboot & choose boot from external disk option.
   
   

Am I doing something wrong / Am I missing something?

Thanks!