The name the drive will be known.
May have up to 11 characters.
Real location (under Unix) for drive root.
It may be floppy disk, hard disk, CD-ROM or network.
Define it if you want the drive raw direct access to some device.
How the filenames are going to be interpreted by Windows programs.
Usually you'll want it set to VFAT, but it may be set to FAT or Unix.
The serial number for drive (8 characters, hex number).