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What is Disk Operating System DOS

What is Disk Operating System DOS

What is Disk Operating System DOSDefinition of DOSThe full form of DOS is Disk Operating System. It was the earliest form of Operating System run on computers. It uses a disk storage device like floppy disk, hard disk drive or optical disc to operate on computer machine during boot process. It provides a file system for reading, organising and writing files on the storage disk. This Operating system were available on mainframe, microprocessors and Personal computers. It was most often used as MS DOS (Microsoft Disk Operating System). MS Dos was the standard operating system for IBM compatible personal computer. The initial versions of DOS were very simple and resembled easily on another operating system called CP/M. DOS is still a 16-bit operating system and does not support multiple users or multitasking. What is Disk Operating System DOS –  answer is continued..

History of Disk Operating System (DOS)

In August 1981, IBM first released as Personal computer on which PC DOS version 1.0 was used. It support only floppy disks. In 1983, DOS version 2.0 was released for IBM PC XT model. Tim Paterson was the person who first wrote DOS OS.

The DOS operating system uses various commands to work on computer. DOS Operating system was not graphic based OS. DOS commands are the commands available in MS-DOS that can be used to interact with the operating system and other command line based software. Now Windows, and other modern OSs use a graphics-based system designed for touch or a mouse. What is Disk Operating System DOS is a OS which can be accessed by single user only.

Some of the important MS DOS commands are shown below with description.

Command Description of Commands
Append     To open files in another directory as if they were located in the current directory
Attrib To change the attributes of a single file or a directory.
Chdir To display the drive letter and folder that you are currently in. It can also be used to change the drive and/or directory
Chkdsk To identify and identify and resolve certain hard drive errors.
Copy It copies one or more files from one location to another.
Date The date command is used to show or change the current date.
Del The del command is used to delete one or more files. The del command is the same as erase command.
Dir The dir command is used to display a list of files and folders containing inside a folder that you are currently working on.
Diskcopy To copy the entire contents of one floppy disk to another.
Edit The edit command starts the MS-DOS Editor tool which is used to create and modify text files.
Erase The erase command is used to delete one or more files. It is same as del command
Fdisk The fdisk command is used to create, manage, and delete hard drive partitions.
Find The find command is used to search for a specified text string in one or more files
Goto The goto command is used in a batch or script file to direct the command process to a labelled line in the script.
The graphics command is used to load a program that can print graphics.
Keyb The keyb command is used to configure a keyboard for a specific language(Hindi/ English/ etc)
Mkdir The mkdir command is used to create a new folder.
Move It is used to move one or files from one folder to another. For renaming directories it is also used.
Path To display or set a specific path available to executable files.
Rename It is used to change the name of the individual file that you specify.
Rmdir It is used to delete an existing or completely empty folder.
Scandisk It is used to start Microsoft Scandisk, a disk repair program.
Sys It is used to to copy the MS-DOS system files and command interpreter to a disk
Time It is used to show or change the current time.
Verify It is used to enable or disable the ability of Command Prompt, or MS-DOS, to verify that files are written correctly to a disk.

List of Disk Operating Systems (DOS)

  1. 86-DOS – It was developed by Seattle Computer Products for its 8086 based s-100 computer.
  2. MS-DOS – It was developed for based on 86 DOS for 86 based personal computer.
  3. PC-DOS – For IBM PC and Compatibles.
  4. Concurrent DOS – For Compatible Multiuser Multitasking Operating system.

    Many other DOS versions was developed according to the need of computer processors. So this is about What is Disk Operating System DOS in next topic we will talk about Window Version Operating systems.

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