CHOOSE RE-BOOT In a complex environment, it may be necessary to re-boot (to clear an accumulation of drivers or TSRs from memory) and start fresh via AUTOEXEC. A "CHOOSE RE-BOOT" will restart your system just as if you had held CTRL-ALT-DEL. In some cases, your batch process may temporarily substitute new AUTOEXEC.BAT or CONFIG.SYS files to effect the appearance of continuous (seamless) control.