Disk Manipulation 

   DOS COMMAND    WHAT IT DOES

    ASSIGN        lets you use treat a disk drive as though 
                  it were another disk drive with a different
                  letter.
    DISKCOMP      lets you compare one whole disk to another
    DISKCOPY      lets you copy one whole disk to another
    JOIN          lets you treat a disk drive as though it were
                  a part of another disk drive.
    LABEL         lets you put a label on a disk.
    SUBST         lets you treat a part of a disk drive as though
                  it were another disk drive.
    VOL           displays the label on a disk.
