Thanks for the responses! Yes, Label, or VolumeName may not be unique. While in this particular environment I can be sure that unique volume names are used as a trigger, I like the idea of using a zero byte identifier file on the drive; it seems to be pretty straightforward to implement and guarante...

Is there an [easy] way to refer to a drive by its label? I'm mostly thinking this in the context of external/removable drives where I'd like a script to take a periodic action (like write into a file) on an external drive if it's present. However, since removable drives may easily be reassigned a di...