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Chapter 2. Starting DOS > System Configuration

System Configuration

If you are not a long-time computer user, or if you have always had someone else maintain your system configurations for you, you might not be familiar with the roles played by two important files during startup. The CONFIG.SYS and AUTOEXEC.BAT files customize the way your computer is configured. These files load drivers, set options, and tweak the DOS environment.

Note

The DOS environment is a space in memory reserved for creating variables that can be looked at by programs running on your system. The default size of the DOS environment is only 256 bytes in length. Some programs make extensive use of the DOS environment to store customization settings. You can use the SHELL command to increase the size of the environment.



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