File Extension Library

.SYS File Extension

  • Developer by: Microsoft
  • Category: System Files
  • Format: Text and Binary

What is an .SYS file?

.SYS file extension is created by Microsoft. .SYS has been classified as System Files. The format of .SYS file is Text and Binary.

.SYS is Windows System File

A SYS file is a system file used by Microsoft DOS and Windows operating systems. It contains system settings and variables, as well as functions that are used to run the operating system. SYS files are commonly used to store device drivers and other core Windows functions.

Some examples of SYS files include the following:

  • IO.SYS: stores the default DOS device drivers and the DOS initialization program; used by DOS and Windows 9x.
  • MSDOS.SYS: contains the core operating system code for DOS, known as the DOS kernel.
  • CONFIG.SYS: contains the primary configuration information used by DOS.
System files are most commonly found within the Windows directory of a Windows installation. In particular, many SYS files are stored in the Windows\winsxs directory in later versions of Windows.

List of all softwares that can open the Windows System File
Microsoft Windows
Parallels Desktop for Mac with Windows installed
File Type 2 Motorola Driver File
Developer by: Motorola Category: System Files

Device driver used by Motorola cell phones; allows the phone to communicate with computer and transfer files to and from the device; typically installed with the software installation CD included with the cell phone.

Example Motorola driver files include the "m56pci.sys" device controller and the "p2k.sys" file, which enables the P2Kman program to upload and download files from Motorola Vxxx cell phones.

How to Open .SYS file on different platforms

Open .SYS File on Windows

  • Right-click a .SYS
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .SYS file and Select check box "Always use this app to open .SYS files" Press "Ok"

Open .SYS File on Mac

  • Right-click (or Ctrl + Left-click) the .SYS file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .SYS File on Linux

Right click on the .SYS file, choose "Open with" and select a program from the list above

Open .SYS File on iPhone

Select a file. If you don't see an application to open the .SYS file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .SYS File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .SYS files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .SYS files

  1. You need to update the application that you normally use to open .SYS files. Only the latest version of the software supports the current .SYS file format
  2. You need to check the .SYS file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)