Disk Names Lost

Somehow I managed to lose the names of my disk drives in the Folder Tree. For example my X: drive is called 'Media' but I only see X:
I know its a setting but I cannot find it.

If you type "tree label" into the search field at the bottom of preferences, it should be among the highlighted pages/controls.

(If not, shout. I'm not at a PC to double check.)

Ah - That was the one.. Thank you sir.