VERIFY= (CONFIG.SYS Command)

                                                         Compatibility: 2.0+ 
 Purpose: This causes DOS to enable or disable a low-level disk function
          which checks each disk sector after it is written.

          The Verify command does the same thing

  Syntax: VERIFY=ON
      or: VERIFY=OFF

█▌Parameters▐█

       ON turns on write-verification (maximum safety).

      OFF turns it off (better speed).

          The default setting is VERIFY=OFF.

█▌TECH Notes▐█

  ■ You can do this in your program via DOS fn 2eH (set/reset verify).

  ■ Verify ON does NOT compare written data to data in memory.  It performs
    an INT 13H 04H (verify sectors) on data after it is written.  That fn
    compares the ECC▲ recorded in the sector with the ECC calculated by the
    controller.

  ■ Internally, DOS toggles VERIFY ON when it writes FAT and directory
    information.  Leaving VERIFY ON all the time will degrade disk
    performance, especially on floppy diskettes.

See Also: CONFIG.SYS Commands
                                    -♦-