LABEL - Creates, changes, or deletes the volume label of a disk.
LABEL [drive:] [label]
LABEL [/MP] [volume] [label]
drive: Specifies the drive letter of a drive.
label Specifies the label of the volume.
/MP Specifies that the volume should be treated as a
mount point or volume name.
volume Specifies the drive letter (followed by a colon),
mount point, or volume name. If volume name is specified,
the /MP flag is unnecessary.
               (
geocities.com/ian_springer)