What are you doing to get to this point? It appears you're running a script or something. (I'm confused where the "mounts" are coming from.)
If I go to "mounts and storage" menu, only cache is mounted now (says "unmount cache"). If anything besides cache says "unmount", I'd unmount it.
Now if you format cache, does it work? Format data work?
I really need to know what you're doing before getting to this point tho.