Command: mirror

  MIRROR records information about the disk, such as the boot sector,
  file allocation table and root directory for possible data recovery
  via UNFORMAT.

Syntax:

  MIRROR [drive]
  MIRROR [/PARTN]
  MIRROR [/?]

Options:

  drive   Saves UNFORMAT information
          to the end of drive #. FAT32 is NOT supported.
  /PARTN  Saves the partition tables to a:\partnsav.fil for future.
          Recovery is possible via UNFORMAT /PARTN.
  /P      Same as /PARTN.
  /?      Shows the help.

Comments:

  MIRROR stores a copy of the boot sector, 1 FAT table and the root
  directory in a "storage location" near the end of the disk.
  The space used by the mirror image is marked as reserved in the FAT
  tables, if necessary. (Currently works only on FAT-16 file systems.)
  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:      (FAT32 is NOT supported.)
  mirror /partn  (Saves Backup to A:\partnsav.fil)

See also:

  format
  undelete
  unformat

  Copyright © 2008, updated in 2022 W. Spiegl.

  This file is derived from the FreeDOS Spec Command HOWTO.
  See the file H2Cpying for copying conditions.