In one of our last training sessions some of our teachers were trying to install Chrome Apps and Extensions and they were not able to because the Chromebooks were staying that the "Chrome Disk was Full."
After a few conversations with some other Chromebook users this was a suggestion that someone posted.
I have had that happen a few times. Those students have had many pages of
unneeded Apps. I have them delete many of the apps and than clear the
cache. That has helped all my situations so far but I would love to hear
from others out there!
To clear your Cashe - Click on the Settings Menu Bar
Click on Settings
Under Privacy - Click on Clear Browsing Data
Clear Browsing Data...
Empty the Cashe -
Hope it helps and works!