What is SYS? What Opens a SYS? File Format List from WhatIs.com

File Extension

SYS File Format

System file Device driver or hardware configuration file

SYS is a file extension for system file device driver or hardware configuration file format used by Microsoft Windows.

A SYS file also houses system settings and variables for the drivers that enable Windows to talk to your hardware and devices.

Learn more about SYS files:

See answers to questions related to systems administration at IT Knowledge Exchange.

This was last updated in August 2010
Editorial Director Margaret Rouse

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