Reinstall The Chrome Operating System; Chrome Os Verification Is Turned Off Message; Troubleshooting Tips - Dell Inspiron Chromebook 7486 Service Manual

Operating System

Reinstall the Chrome Operating System

1 Start your Inspiron Chromebook.
2 When the Chrome OS is missing or damaged screen appears, insert the USB flash drive or SD card you created into the USB port or
SD card slot on your Chrome device
3 Wait for the Inspiron Chromebook to boot up from the flash drive
4 Follow the instructions that appear on the screen.
5 On successful installation of the Chrome operating system, you will be prompted to remove the USB flash drive or SD card.
6 Remove the USB flash drive or SD card when prompted, and your Inspiron Chromebook will automatically restart.
You should now be able to start your Inspiron Chromebook as normal. Because the data stored on your Inspiron Chromebook has been
cleared, you will need to go through the initial setup again. Make sure you sign in with your primary Google Account, because this account
will be set as the owner account.

Chrome OS verification is turned off Message

By default, Inspiron Chromebooks are set to the normal user mode. If you've set the user mode to developer mode instead, you'll see a
screen with the message "Chrome OS verification is turned off" when you start up. Use the developer mode if you want to test your own
version of the Chrome operating system.
Press Ctrl+D to enter developer mode. If you press the space bar instead, you'll see a screen asking to recover your device.

Troubleshooting Tips

Table 19. Troubleshooting tips
Question
I am unable to recover my Inspiron Chromebook
An error message An unexpected error has occurred.
An error message You are using an out-of-date Chrome OS
recovery image.
92 Troubleshooting
Instructions
1 1.Click this link to download the Recovery Tool.
2 Modify the script permissions to allow execution with the
following command: $ & sudo chmod 755 linux_recovery.sh
3 Run the script with root privileges with the following
command:$ sudo bash linux_recovery.sh
4 Follow the prompts from the tool to complete building the
operating system image.
Solution
To help ensure that you are running the latest version of Chrome
OS once you recover your Inspiron Chromebook, we recommend
creating the recovery media with the latest version of Chrome OS
and avoid using recovery media that may contain an older version of
the operating system.
Try the following steps:
1 Confirm that you successfully completed all instructions
exactly as specified in Step 2: Create the recovery USB flash
drive or SD card above.
2 Try using a different USB stick or SD card.
3 If the problem persists, contact Google Chrome support team.
You should download an up-to date recovery image. Simply follow all
the instructions exactly as specified in Step 2 above.