The description below is from the book
DOS the Easy Way by Everett Murdock Ph.D.

CLICK HERE for information about downloading the book.

Type: Internal (2.0 and later)

BREAK on|off

Purpose: Used from the DOS prompt or in a batch file or in the CONFIG.SYS file to set (or display) whether or not DOS checks for a Ctrl + Break key combination.


DOS normally detects a press of the Ctrl + Break or Ctrl + C key combination only while checking for keyboard input or while sending characters to the screen.

Some application programs automatically reset BREAK (either ON or OFF); this will cancel the BREAK options you set.

For more information about the BREAK command, see Chapter 6, Tips for Advanced Users, in the downloadable book DOS the Easy Way.



break on

to tell DOS to check for the Ctrl + C key combination. To determine the current BREAK setting, enter


For more information about this command, refer to the downloadable book DOS the Easy Way.

Copyright 1985 - 2014 by Everett Murdock

Back to the Easy DOS Command Index