Operating System Files

Open SYS File

Well, when it comes to .sys files, you need to take some precautions! Files with the .sys extension are actually System files and deleting some unintentionally can harm your system . .sys files are associated with the PDP-10, which was a mainframe computer. It was created by Digital Equipment Corporation (DEC) in the 1960s and the full form of PDP-10 is Programmed Data Processor, Model 10. These files were basically created through this mainframe system. They are used by the programs such as Microsoft DOS and other Windows operating system applications.

A little more about this file format

These files with the SYS format consist of the system settings including the variables as well as the functions which are of the primary importance to run an operating system. They are also used to store the driver details of different devices and are very important to carry out the other functions of the Windows. The default location to save a .sys file in a system is in the C Drive. It is named as C:Windows directory in the case of the Windows computers, and for Windows Vista and the successive versions, the saving location is C:WindowsWinSxs.

The SYS format files contain 3 sub-types of files in them. They are io.sys format, msdos.sys format and the config.sys format. The io.sys format is used to contain that data which has the details of the default device drivers of MS-DOS and it also contains the initialization program for DOS. These files are used by Windows 9X and DOS itself. The second category, i.e. the msdos.sys format includes the main system files which form the operating system for DOS. It is called the DOS kernel. The last category of config.sys is used to contain the primary information which is used by the DOS program to operate. Generally, the files with the .sys extension are hidden automatically by the system.

How to access this type of files

Although the files with the SYS are primarily the files for the Windows Operating System, they can also be accessed through the Mac systems, provided that they have Windows installed on them. The Macs which do not have configuration would not be able to access a .sys file. Other applications which are related to this file extension are Play Station 2 Icon by Sony Corporation of America, SYGRAPGH/STAT/SPSS/PC (a type of data file) and the System Device Driver.

Open SYS File on Windows OS

  • Look for an SYS file you need to open in Windows Explorer and double-click on it
  • If the file doesn’t open automatically and you see a “Windows can’t open a file” message then you should search for a program which can open SYS file
  • If you have a program which can open SYS file installed on your computer then launch that program and select “File” and then “Open” or similar options from its menu to open the SYS file
  • If you don’t have the program installed then you need to try searching for “SYS wiki”, “how to open SYS file” in the search engine.
  • Once you find the application, install it on your computer
  • After the program is installed double-click on the SYS file to open it

File extensions are used by Windows operating system to specify what kind of information is stored in the file. Every file in Windows OS needs to have file extension and file extensions are used by Windows to determine which application it should use to open the file. Every application installed on Windows OS places information about which extensions it could open into the Windows registry and Windows uses this information to determine which application it should launch when user double-clicks on the file. If application which can open SYS file is not installed, then Windows will show ‘Windows can’t open SYS file’ message and buttons to either select an application on the computer which can open the file or to search the web for the application which can open SYS file.

Open SIS File

The files with the .sis extension are primarily categorized under the head of the Operating System Installer files. These are another type of files that should never be tampered with – not unless you want to crash the system! They are most commonly and extensively used by the Symbian system, created by the Symbian Company itself. The acronym sis stands for the Software Installation Script. Basically; it is just like an archive for the Symbian OS files. This is not an application file and thus, should not be mistaken with one. This type of installation file contains all the data which is necessary for the complete installation of a particular program package which is being run under the Symbian OS.

The actual application files which are used with the .sis files are the files in the .app format. They are actually added by the .sis files to that device in which the application is being installed. The Symbian command line tool which is used to create the SIS .sis files is the &qout;makesis&qout; command. This program also comes with the ‘createsis&qout; application program which may be used by the program developers while making applications for the Symbian system.

Who uses this type of file format?

Though the SIS .sis is mostly used by the Symbian system in the Nokia mobile devices, it is also used by other devices like Ericsson and Motorola phones. Generally, the Symbian S60 phone theme installation is the one which is created using these files. The creation of a .sis file can be done in many different ways. The most basic process of doing this is by creating a package definition file with the .pkg extension. The file with this extension contains the important information regarding the vendor, package name and the files included in the package.

Another way to create these file may be by using the Carbide.c++ IDE which can automatically build the .sis files for defining and creating the installation package. The different programs which can open the .sis files are Nokia Suite, Nokia PC Suite, UnSIS, Easy SIS Creator, Palm OS Emulator and SIS contents. The other applications which are compatible with this file type are Sisma by Digital Confidence, SiSoftware Sandra (a type of professional business script) by SiSoftware and the Student Information System Data File by Enray Consulting Inc.

Open SIS File on Windows OS

  • Look for an SIS file you need to open in Windows Explorer and double-click on it
  • If the file doesn’t open automatically and you see a “Windows can’t open a file” message then you should search for a program which can open SIS file
  • If you have a program which can open SIS file installed on your computer then launch that program and select “File” and then “Open” or similar options from its menu to open the SIS file
  • If you don’t have the program installed then you need to try searching for “SIS wiki”, “how to open SIS file” in the search engine.
  • Once you find the application, install it on your computer
  • After the program is installed double-click on the SIS file to open it

File extensions are used by Windows operating system to specify what kind of information is stored in the file. Every file in Windows OS needs to have file extension and file extensions are used by Windows to determine which application it should use to open the file. Every application installed on Windows OS places information about which extensions it could open into the Windows registry and Windows uses this information to determine which application it should launch when user double-clicks on the file. If application which can open SIS file is not installed, then Windows will show ‘Windows can’t open SIS file’ message and buttons to either select an application on the computer which can open the file or to search the web for the application which can open SIS file.

Open RUN File

RUN files are executable files for a Linux environment and usually used for program installers. The RUN extension is also used for map files for the 3D game Rune and by RunScanner, which scans the PC at startup to collect data about possible hijacks and startup items and creates a plaintext file with this extension.

Open RUN File on Windows OS

  • Look for an RUN file you need to open in Windows Explorer and double-click on it
  • If the file doesn’t open automatically and you see a “Windows can’t open a file” message then you should search for a program which can open RUN file
  • If you have a program which can open RUN file installed on your computer then launch that program and select “File” and then “Open” or similar options from its menu to open the RUN file
  • If you don’t have the program installed then you need to try searching for “RUN wiki”, “how to open RUN file” in the search engine.
  • Once you find the application, install it on your computer
  • After the program is installed double-click on the RUN file to open it

File extensions are used by Windows operating system to specify what kind of information is stored in the file. Every file in Windows OS needs to have file extension and file extensions are used by Windows to determine which application it should use to open the file. Every application installed on Windows OS places information about which extensions it could open into the Windows registry and Windows uses this information to determine which application it should launch when user double-clicks on the file. If application which can open RUN file is not installed, then Windows will show ‘Windows can’t open RUN file’ message and buttons to either select an application on the computer which can open the file or to search the web for the application which can open RUN file.

Open RND File

RND is usually a random seed file from the PGP encryption software and is used for generating a sequence of random numbers to be used for encryption. It is typically named randseed.rnd and found under the PGP application directory. RND may also be a Random Hash data file used for creating unique secure certificates used for authentication later.

Open RND File on Windows OS

  • Look for an RND file you need to open in Windows Explorer and double-click on it
  • If the file doesn’t open automatically and you see a “Windows can’t open a file” message then you should search for a program which can open RND file
  • If you have a program which can open RND file installed on your computer then launch that program and select “File” and then “Open” or similar options from its menu to open the RND file
  • If you don’t have the program installed then you need to try searching for “RND wiki”, “how to open RND file” in the search engine.
  • Once you find the application, install it on your computer
  • After the program is installed double-click on the RND file to open it

File extensions are used by Windows operating system to specify what kind of information is stored in the file. Every file in Windows OS needs to have file extension and file extensions are used by Windows to determine which application it should use to open the file. Every application installed on Windows OS places information about which extensions it could open into the Windows registry and Windows uses this information to determine which application it should launch when user double-clicks on the file. If application which can open RND file is not installed, then Windows will show ‘Windows can’t open RND file’ message and buttons to either select an application on the computer which can open the file or to search the web for the application which can open RND file.

Open PUP File

PUP files made for the Puppy Linux OS are installer packages that run the installer when executed. PUP files are also commonly seen in PSPs where they are used for firmware updates. These updates can contain any combination of security patches, feature upgrades and additions and bug fixes. The usual name used is PS3UPDAT.PUP.

Open PUP File on Windows OS

  • Look for an PUP file you need to open in Windows Explorer and double-click on it
  • If the file doesn’t open automatically and you see a “Windows can’t open a file” message then you should search for a program which can open PUP file
  • If you have a program which can open PUP file installed on your computer then launch that program and select “File” and then “Open” or similar options from its menu to open the PUP file
  • If you don’t have the program installed then you need to try searching for “PUP wiki”, “how to open PUP file” in the search engine.
  • Once you find the application, install it on your computer
  • After the program is installed double-click on the PUP file to open it

File extensions are used by Windows operating system to specify what kind of information is stored in the file. Every file in Windows OS needs to have file extension and file extensions are used by Windows to determine which application it should use to open the file. Every application installed on Windows OS places information about which extensions it could open into the Windows registry and Windows uses this information to determine which application it should launch when user double-clicks on the file. If application which can open PUP file is not installed, then Windows will show ‘Windows can’t open PUP file’ message and buttons to either select an application on the computer which can open the file or to search the web for the application which can open PUP file.

Open OSX File

OSX is an executable file format from the PowerPC architecture version of Mac OS. It is actually a program header that has been saved in PowerPC Executable Format or PEF. These files can be run directly inside OS X or through the Rosetta architecture on Intel machines. Rosetta has now been phased out and PowerPC executables are no longer support on OS X.

Open OSX File on Windows OS

  • Look for an OSX file you need to open in Windows Explorer and double-click on it
  • If the file doesn’t open automatically and you see a “Windows can’t open a file” message then you should search for a program which can open OSX file
  • If you have a program which can open OSX file installed on your computer then launch that program and select “File” and then “Open” or similar options from its menu to open the OSX file
  • If you don’t have the program installed then you need to try searching for “OSX wiki”, “how to open OSX file” in the search engine.
  • Once you find the application, install it on your computer
  • After the program is installed double-click on the OSX file to open it

File extensions are used by Windows operating system to specify what kind of information is stored in the file. Every file in Windows OS needs to have file extension and file extensions are used by Windows to determine which application it should use to open the file. Every application installed on Windows OS places information about which extensions it could open into the Windows registry and Windows uses this information to determine which application it should launch when user double-clicks on the file. If application which can open OSX file is not installed, then Windows will show ‘Windows can’t open OSX file’ message and buttons to either select an application on the computer which can open the file or to search the web for the application which can open OSX file.

Open OCX File

OCX is used by ActiveX as object files for storing controlling behavior that can be triggered by an user event. These can be used for simple functions such as window resizing and handling scroll bar movement. It is usually written in C++ or Visual Basic or other similar programming languages.

Open OCX File on Windows OS

  • Look for an OCX file you need to open in Windows Explorer and double-click on it
  • If the file doesn’t open automatically and you see a “Windows can’t open a file” message then you should search for a program which can open OCX file
  • If you have a program which can open OCX file installed on your computer then launch that program and select “File” and then “Open” or similar options from its menu to open the OCX file
  • If you don’t have the program installed then you need to try searching for “OCX wiki”, “how to open OCX file” in the search engine.
  • Once you find the application, install it on your computer
  • After the program is installed double-click on the OCX file to open it

File extensions are used by Windows operating system to specify what kind of information is stored in the file. Every file in Windows OS needs to have file extension and file extensions are used by Windows to determine which application it should use to open the file. Every application installed on Windows OS places information about which extensions it could open into the Windows registry and Windows uses this information to determine which application it should launch when user double-clicks on the file. If application which can open OCX file is not installed, then Windows will show ‘Windows can’t open OCX file’ message and buttons to either select an application on the computer which can open the file or to search the web for the application which can open OCX file.

Open MUI File

MUI stands for Multilingual User Interface. These files are language files associated with Windows and started with Windows 2000. They allow the interface language to be changed across the OS. A lot of them are installed during the initial installation and more can be downloaded from Microsoft later. Starting with Windows 8, this process will become self-contained from inside the control panel settings.

Open MUI File on Windows OS

  • Look for an MUI file you need to open in Windows Explorer and double-click on it
  • If the file doesn’t open automatically and you see a “Windows can’t open a file” message then you should search for a program which can open MUI file
  • If you have a program which can open MUI file installed on your computer then launch that program and select “File” and then “Open” or similar options from its menu to open the MUI file
  • If you don’t have the program installed then you need to try searching for “MUI wiki”, “how to open MUI file” in the search engine.
  • Once you find the application, install it on your computer
  • After the program is installed double-click on the MUI file to open it

File extensions are used by Windows operating system to specify what kind of information is stored in the file. Every file in Windows OS needs to have file extension and file extensions are used by Windows to determine which application it should use to open the file. Every application installed on Windows OS places information about which extensions it could open into the Windows registry and Windows uses this information to determine which application it should launch when user double-clicks on the file. If application which can open MUI file is not installed, then Windows will show ‘Windows can’t open MUI file’ message and buttons to either select an application on the computer which can open the file or to search the web for the application which can open MUI file.

Open MSU File

MSU files are used for Windows Vista update packages. These files are executable updates for the Vista operating system and they can contain any combination of updates for files and programs. These files are usually run automatically by the Windows Update mechanism via the Windows Standalone Installer.

Open MSU File on Windows OS

  • Look for an MSU file you need to open in Windows Explorer and double-click on it
  • If the file doesn’t open automatically and you see a “Windows can’t open a file” message then you should search for a program which can open MSU file
  • If you have a program which can open MSU file installed on your computer then launch that program and select “File” and then “Open” or similar options from its menu to open the MSU file
  • If you don’t have the program installed then you need to try searching for “MSU wiki”, “how to open MSU file” in the search engine.
  • Once you find the application, install it on your computer
  • After the program is installed double-click on the MSU file to open it

File extensions are used by Windows operating system to specify what kind of information is stored in the file. Every file in Windows OS needs to have file extension and file extensions are used by Windows to determine which application it should use to open the file. Every application installed on Windows OS places information about which extensions it could open into the Windows registry and Windows uses this information to determine which application it should launch when user double-clicks on the file. If application which can open MSU file is not installed, then Windows will show ‘Windows can’t open MSU file’ message and buttons to either select an application on the computer which can open the file or to search the web for the application which can open MSU file.

Open LNK File

All the files with the LNK are actually the shortcut files. The Windows creates shortcuts under the . lnk extension for the programs with the .exe extensions. Here, LNK stands for Link. These shortcut files are created to establish a direct link to the program so that navigation to the main executable program can be done faster and easier. A file can be pointed out as a shortcut by the &qout;curled arrow&qout; indicator on it which says that it is .lnk extension file.

What are the problems one faces with these files?

Sometimes, the files with this extension do not work or display an error message when they are double-clicked on. A simple reason behind them is that the link established between the shortcut and the main executable program has broken, primarily because the program has gone corrupt or it has been removed from the system. Another problem which may creep in while accessing such files can be that each such file is leading to the same executable program. This can be easily solved by making suitable changes in the registry editor.

These shortcut files with the LNK are also known as the shell links. Because of the reason that these files are nothing but the shortcuts to a particular executable program, they cannot be used in place of the files themselves. The .lnk files provide a faster way of accessing a particular program. Double-clicking any such shortcut . lnk file will have the same function just like double-clicking the original icon of the program itself.

So, how do these files help?

There are many Windows Managers which support the shortcut files. Some of them are 4Dwm, aewm++, cwm, dwm, ecomorph, epiwm, fpcbol, and ion2, KWin, Metacity and Window Maker. In addition to defining the target path of the program, a shortcut file may also contain the directory path of a file. However, this system of shortcuts is not for the Apple Macintosh Computers. But the system m ay create symbolic links which can be made using the UNIX subsystem. For shortcut files with LNK, it is always recommended that such files should be properly scanned and checked before they are accessed. They might get infected and thus, demand security attention.

Open LNK File on Windows OS

  • Look for an LNK file you need to open in Windows Explorer and double-click on it
  • If the file doesn’t open automatically and you see a “Windows can’t open a file” message then you should search for a program which can open LNK file
  • If you have a program which can open LNK file installed on your computer then launch that program and select “File” and then “Open” or similar options from its menu to open the LNK file
  • If you don’t have the program installed then you need to try searching for “LNK wiki”, “how to open LNK file” in the search engine.
  • Once you find the application, install it on your computer
  • After the program is installed double-click on the LNK file to open it

File extensions are used by Windows operating system to specify what kind of information is stored in the file. Every file in Windows OS needs to have file extension and file extensions are used by Windows to determine which application it should use to open the file. Every application installed on Windows OS places information about which extensions it could open into the Windows registry and Windows uses this information to determine which application it should launch when user double-clicks on the file. If application which can open LNK file is not installed, then Windows will show ‘Windows can’t open LNK file’ message and buttons to either select an application on the computer which can open the file or to search the web for the application which can open LNK file.