Command: vol
  VOL displays the disk volume label and serial number, if they exist.
Syntax:
  VOL [drive]
  VOL [/?]
      drive  Specifies the drive letter to display the volume 
             label, e.g. C:
Options:
  /?  Shows the help.
Comments:
  Each drive letter can have an own volume label. You can create it
  with "LABEL". The name cannot be longer than 11 letters.
  VOL is a command internal to command.com and needs no other file
  in order to work.
Examples:
  vol c:
  vol d:
See also:
  label
  Copyright © 1998 Jim Hall, updated 2007 and 2020 by W. Spiegl.
  This file is derived from the FreeDOS Spec Command HOWTO.
  See the file H2Cpying for copying conditions.