You probably got a false negative. M. luteus should be oxidase +. To determine M. luteus do a MSA plate which should not produce acid and barley grow.
The volume name, or label, is a name you can assign to each drive on your system. The conversion (and some other utilities) will ask you for it as a way to confirm that you're really asking them to operate on the drive you think you are. We'll look at how to see, and set, the volume name on your drives.
In the case of the floppy disk, this would be a name like \Device\Floppy0. For the volume managers on Windows, they would likely associate the unique ID with some characteristic of the volume itself â a GUID, for example, or some other unique way of tracking that volume.