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CONFIG.SYS Last modified: Sunday, September 01, 1996

The configuration file for DOS systems. Whenever a DOS computer boots up, it reads the CONFIG.SYS file (if it exists) and executes any commands in it. The most common commands are BUFFERS= and FILES=, which enable you to specify the buffer size and the number of files that can be open simultaneously. In addition, you can enter commands that install drivers for devices.

Basic CONFIG.SYS file This page displays a basic CONFIG.SYS file and explains each of the commands.