I have an FreeAgent GoFlex Drive that I would like to save data to via my Raspberry Pi 3. I'm able to view jpegs from the drive, but not save data to it. When I attempt to change permissions, I get the following error:
chmod 755 FreeAgent\ GoFlex\ Drive/ chmod: changing permisssons of 'FreeAgent GoFlex Drive/': Read-only file system
What do I do in order to be able to save to it? I have data on there, so formatting is not an option.