Inaccessible mounted drive

When I right click on a mounted volume in Disk Manager, no options are accessible. They are all grayed out.

I suspect I deleted the folder the drive was mounted on, or maybe I changed the folders name. Is there a way to regain access to the drive? If not, how can I delete the mounted drive from the disk?

ps. I made several new partitons, and copied files to then, then altered the old partitions without updating ERD!