AUTOEXEC.BAT

AUTOEXEC.BAT is a special batch file that was present in the root directory of a boot disk for various versions of PC/MS-DOS and Windows, containing commands that were excecuted upon bootup in order to complete the setup of the system before the user was placed into the command prompt. If you wished the computer to automatically boot into some particular program you would place the command invoking it at the end of this file where it would run after all the other setup was complete.