(This is turned on by Default for ECCS Connexion Chromebook Devices)
To ensure that a specific file you need is available offline, simply open it and then close it again.
When you are offline, open Google Drive or Google Docs in your browser by going to the same URL that you use in online mode (http://drive.google.com) or you can use the Google Drive App. All of your files will be listed as usual, but the ones that aren’t available offline will be grayed out. (Note: If the browser window just keeps spinning, shut down your chromebook, turn it back on and try again - This should fix the issue)
Double-click to open a file. You’ll see a gray “Offline” icon displayed alongside the filename.
Your changes are saved automatically as you edit a document. When you go back online they will be synced back to your account. Any files that have been edited locally but not yet synced will be displayed in bold type in your docs list.
You can also create new documents when working offline. These will be uploaded to your account the next time you are online.
Besides Docs, Sheets, Presentations, and Drawings that you can access Offline, there are some other Google Products that you can set up for Offline Use as well:
Write emails. Gmail Offline is built to support offline access, allowing mail to be read, responded to, searched, and archived without network access. Gmail Offline will send your messages as soon as Wi-Fi is available.
View appointments. With offline access from the Google Calendar app, you can view a read-only version of your calendar.
Take notes. With Google Keep, you can take and save short notes that will save to the cloud the next time you're online.
Read offline web pages. If you've saved web pages for offline viewing later, they will open in Google Chrome on your Chromebook.
View and edit photos. Your Chromebook comes with a built-in photo editor, so you can view and edit photos that are saved to your Chromebook.