Command: mirror
  MIRROR records information about the disk, such as the boot sector,
  file allocation table and root directory for possible data recovery.
Syntax:
  MIRROR [drive]
  MIRROR [/PARTN]
  MIRROR [/?]
Options:
  drive   Saves UNFORMAT information to a drive letter, e.g. X:
  /PARTN  Saves the partition tables to a:\partnsav.fil for future.
          recovery via UNFORMAT /PARTN.
  /?      Shows the help.
Comments:
  MIRROR stores a copy of the boot sector, FAT tables, and root
  directory in a "storage location" near the end of the disk.
  By using the /partn switch with the mirror command you can
  save a backup of the partition tables to a partnsav.fil on
  the a: drive.
  Note: The mirror image created by this program is only recoverable
  by using the UNFORMAT program for FreeDOS.
Examples:
  mirror d:
  mirror /partn
See also:
  format
  undelete
  unformat
  Copyright © 2008 W. Spiegl.
  This file is derived from the FreeDOS Spec Command HOWTO.
  See the file H2Cpying for copying conditions.