Dell Chromebook 5190 Owner's Manual page 84

Question
An error message You are using an out-of-date Chrome OS
recovery image.
You successfully recovered your Chromebook but now you can not
use your USB or SD card with Windows
You successfully recovered your Chromebook but now Windows
does not recognize the whole size of the USB or SD card used for
recover.
84 Diagnostic and troubleshooting
Solution
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.
After you have completed recovery, you need to format your USB
or SD card using the recovery tool.
After you have completed recovery, you need to format your USB
or SD card using the recovery tool.