Incorrectly editing the Config.sys or any system file could cause stability problems with your computer. Note that different versions of DOS, such as FreeDOS, parse files similar to Config.sys ...

The CONFIG.SYS and AUTOEXEC.BAT files could load drivers or launch other executables. It was also possible to modify the MSDOS.SYS file, but that is beyond the scope of this article.

How to View Startup Files on XP Home Config.sys. As your PC boots, the startup programs that open or run in the background can affect your computer's performance.

I have a .sys file that i would like to modify.It controls my CPU fan speed and my Power Supply fans.I am wondering if WinXp have a prog that allows to modify .sys files,or if there are any 3rd ...