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Troubleshooting DOS Devices
While Windows helps to get your hardware recognized, DOS devices need your help to be recognized and to work. This is necessary if you're using DOS programs, especially games that may need several hardware devices in order to work. Two text-based configuration files (not necessary to Windows) tell DOS what to load when the PC first boots up: the CONFIG.SYS where memory is managed and hardware devices are loaded, and the AUTOEXEC.BAT file, where programs are loaded and a mouse driver is installed.