-$   Restore volume label

  This command is used to restore any volume label that has been stored in
  the .ZIP file.  It is important to remember that the PKZIP command used to
  store a volume label does not store a drive letter along with the label.
  Upon extraction, the volume label will be assigned to the target drive.

     C:\>pkunzip davebk.zip -$ a:

  This example will extract the contents of "davebk.zip" to the A: drive.
  If a volume label was stored as part of the .ZIP file, the volume label
  for the floppy in drive A: will be reset to the one contained in
  davebk.zip.