Dropbox objects to Ubuntu's file system

Question

I kept getting notifications from Dropbox that I needed to move my Dropbox to a supported filesystem. Not quite sure what that meant. The syncing has now stopped. I removed the old version of Dropbox and re-installed it. The message I get is shown in the attached image. How can I get the Dropbox going again?

More information in the following image suggests that I do have EXT4 partition and filesystem. But how come Dropbox doesn't recognise it?

I am adding this image to explain my quandary. The EXT4 partition is mounted (not by me but by default). When I click on the link "Linux Filesystem" it opens up the filemanager on the left. I have no permission to add anything to it as it is root. Dropbox wants to move the folder. When I click on the "move" it opens the "find directory" and that that is where I am stuck. BTW I have now installed MEGA as a replacement for Dropbox and it works like a dream.

Answer 1

You need to move your Dropbox folder to a native Linux Filesystem such as an EXT4 partition for Dropbox syncing to work. You can check which filesystem is in use in each partition by running Disks.

The move can be achieved as follows:

Click the Dropbox icon in the system tray or menu bar.
Click Preferences 
Click Sync 
Click Move… 

Select the new location for your Dropbox folder.
Let Dropbox move your folder and its contents to the new location.

You may need to type a definitive path to the new location in Directory: dependant on where the mount point is for the intended new location rather than just use the Look in: drop down. The Choose button will only become highlighted when you have selected a valid directory.

It goes without saying that you need to select a valid mount point and directory structure present on your own system rather than just copy what is shown in the graphic.

Extract from Dropbox Help Center