This wikiHow teaches you how to enable a USB boot on a Chromebook. This can only be done after you enable Developer Mode, a process that will erase all data on your Chromebook.
Step
Part 1 of 2: Enabling Developer Mode
Step 1. Back up the data on your Chromebook
Enabling Developer Mode will erase all data on your Chromebook, and any customizations you've made.
Step 2. Turn off the Chromebook
Do this by clicking on the account photo in the menu and selecting Power.
Step 3. Press Esc+F3 and Power keys simultaneously
The Chromebook will turn on and ask you to insert recovery media.
Some Chromebook models may require you to insert a paper clip or other small object into the small hole on the side of the computer while pressing the Power button. If you find a small hole on the side of the computer that says "Recovery", try the hole
Step 4. Press Ctrl+D on the screen Insert recovery media
This will bring up a confirmation message.
Step 5. Confirm by pressing Enter
The Chromebook will restart. When the conversion is complete, a message that says OS verification is OFF will be displayed. This screen will always be displayed every time the Chromebook is turned on.
Step 6. Press Ctrl+D on the "OS verification screen
Now the Chromebook is in Developer Mode.
Part 2 of 2: Enabling USB But
Step 1. Press Ctrl+Alt+F2 on the home screen
This will open a console window, which is a black screen with white text.
Step 2. Type sudo crosssystem dev_boot_usb=1 in the window
Step 3. Press Enter key to run the command
Step 4. Insert the USB flash disk (flash disk) you want to boot
After the USB boot is enabled, you can now boot from the flash drive through the console window.
Step 5. Press Ctrl+U button on "OS verification screen
The Chromebook will restart from the flash drive you plugged in.
