I made the mistake of accepting a request from Dropbox to back up an external drive plugged into my Mac. I didn't stop to think the files in that drive were going to be huge video files that should NOT be backed up to Dropbox. How do I stop the backup of that external drive? The help section says go to the preferences of the Mac Dropbox app and uncheck folders I don't want to be synced. There is NO such option. The only option is to uncheck something about set up notifications for new external drives.
There was another help suggestion that suggested right clicking "the backup" and pausing it. WHAT backup?? I don't see the external drive listed anywhere in my Dropbox folder, and right clicking the external drive icon on my desktop doesn't show any Dropbox options.
How do I stop this backup without disabling ALL backups??