LABEL drive:][label LABEL /MP volume label drive: Specifies the drive letter of a drive. label Specifies the label of the ...

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.