Tried to perform the same steps as I did earlier but Chromebook was not able to boot via USB. Same tried with 4 USB drives as I thought that it might be the issue with USB also tried Linux as well for creating the recovery disc. So created USB recovery drive and connected that USB drive in Chromebook getting message 'the device you inserted does not contain Chrome OS'. I used model number ASUKA D2S-A3C-J4N-W6W-G3K-A72 mentioned in recovery mode. Later on I tried Google's recovery tool using this site ' ' and added that extension into chrome. Please remove all connected devices and start recovery'. Used this website to install the Gallium OS through ISO USB install: Ĭhromebook rebooted and I saw the screen where it was written 'Chrome OS is missing or damaged. Now on startup, pressed Ctrl+L, got the BIOS screen instead of Chrome OS. Powered off the Chromebook by typing in 'sudo poweroff' Pressed Ctrl+Alt+F2 at the Chrome OS login screen.Īt the terminal prompt, type: sudo crossystem dev_boot_usb=1 dev_boot_legacy=1 Pressed Ctrl+D at the initial startup screen to load Chrome OS. I tried ESC+Refresh+Power key to Enable Developer Mode then I pressed CTRL+D then pressed Enter to turn off the OS verification. I removed the Write Protected Screw from the back of the Chromebook.