A daily updated filename extension database!

SYS file extension

The table below provides useful information about the .sys file extension. It answers questions such as:

  • What is the .sys file?
  • What program do I need to open a .sys file?
  • How can the .sys file be opened, edited or printed?
  • How can I convert .sys files to another format?

We hope you find this page helpful and a valuable resource!

4 extension(s) and 1 alias(es) found in database

✅ Windows System Configuration

.sys
Description:
SYS is a Windows System Configuration file on Windows (msdos.sys).
Application: Notepad
Mime-type: text/plain
Magic number: -
Magic string: -
Sample: -
SYS aliases:
-
SYS related links:
-
SYS related extensions:
Microsoft Windows 95 Clean Boot File

Configuration File

Initialization File

MS-DOS Subsystem Startup File

✅ System File

.sys
Description:
SYS is a general system file.
SYS format description not yet available
Category: Other files
Application: -
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
SYS aliases:
-
SYS related links:
-
SYS related extensions:
Autodesk AutoCAD Heidi Information File

Autodesk AutoCAD Heidi Device Interface

Compressed SYS File

✅ MS-DOS System File

.sys
Description:
SYS is a MS-DOS System file (msdos.sys, io.sys). IO.SYS contains the default MS-DOS device drivers and the DOS initialization program. MSDOS.SYS is run after IO.SYS and contains the core operating system code for DOS (the DOS kernel).
Category: Other files
Application: -
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
SYS aliases:
-
SYS related links:
-
SYS related extensions:
MS-DOS Batch File

Windows Command File

Executable File

Renamed MS-DOS System File

MS-DOS Subsystem Startup File

MS-DOS Overlay Data

MS-DOS 7.0 System File

MS-DOS Shell Menu Group Data

✅ Microsoft SQL Server Data Replication System Table Data

.sys
Description:
SYS file is a Microsoft SQL Server Data Replication System Table Data. Microsoft SQL Server is a relational database produced by Microsoft.
Category: Data files
Application: Microsoft SQL Server
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
SYS aliases:
-
SYS related links:
-
SYS related extensions:
Aston-Tate dBASE Database

SQR Script

SQL Script

Embarcadero InterBase Database File

RBase Data

General Database File

SQR Portable Format

SQR Printer Output

Pervasive SQL Database

SQL Script Sequences

✅ General Swap File

.swp
Description:
SWP file is a General Swap File. Windows Swap file is a disk file used by Windows for its virtual memory. A virtual memory system temporarily stores segments of the application on disk when there is not enough memory to hold all the programs called for.
SWP format description not yet available
Category: Data files
Application: -
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
SWP aliases:
sys
SWP related links:
SWP related extensions:
General History File

Other types of files may also use the .sys file extension.

🔄 .sys converters

The following softwares are capable of converting .sys files to other formats:

XnView

For example, using the softwares above, a .sys file can be converted into one of the following formats:

bmf, ptg, g4, skp, 92i, dat, ofx, emf, iss, flp, dcm, fit, bmx, pcd, mng

🚫 The .sys file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

cys, eys, sgs, shs, sjs, ss, ssy, sts, sus, sy, syc, syw, syx, syz, wys

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Shell Scrap File
Clustify Summary File
SYSTAT Command
Squeak Source Code
Ribbons Secondary Structure
Y86 Assembler Source Code
Cytoscape Session File
Yamaha SY Series Sample
MemMaker Status Information File
ScreenShare Compressed Data

🔴 Can't open a .sys file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:

example.sys

To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .sys file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .sys file extension, write to us!

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