Disk Operating System


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Disk Operating System:

http://terpconnect.umd.edu/~nsw/ench250/dostutor.htm#2A Disk Operating System

What is Dos?:

What is Dos? MS-DOS stands for D isk O perating S ystem. DOS (Disk Operating System) was the first widely-installed operating system for personal computers. DOS controls the computer’s hardware and provides an environment for programs to run. This system program must always be present when working with your computer. That means it is simply: "a System for Operating the Disks It enables the user to organize data files, load and execute (run) program files, and control the input and output devices attached to the computer.

What is Dos?:

What is Dos? Dos is a single user, single task OS. Once a process is begun, it must be allowed to run until finished before the same process can be used again. There are other brands of DOS besides the most well known "MS-DOS", ie : PC-DOS, DR-DOS/OPENDOS. Generally speaking, they will all function in the same way, especially at the most simple level.

Why You Need DOS?:

Why You Need DOS? There are a variety of reasons why you need DOS. A few of them are listed below to satisfy your curiosity. 1. DOS controls the flow of information between you and the computer (translator). 2. DOS allows you to store information on your computer. 3. DOS allows you to retrieve information stored on your computer. 4. DOS interprets and translates the software you have on your computer. 5. DOS gives you access to all its function (i.e. saving, copying, and printing files).

Some very useful internal DOS commands: :

Some very useful internal DOS commands: A: - Change current directory path to the floppy disk drive C: - Change current directory path to the hard disk drive DIR - Display current directory (show all files and sub-directories). MD - Make a new directory, eg : MD C:\EMAIL CD - Change current directory, eg . CD C:\EMAIL COPY - Copy file(s) from one place to another. Del - Delete/erase a file

DOS usage examples: :

DOS usage examples: DIR [enter] Displays the current directory listing. DIR *.txt [enter] Displays any files in the current directory with .TXT as their extension DIR A:\PICTURES[enter] Displays a directory listing for the path, A:\PICTURES

DOS usage examples: :

DOS usage examples: A: [enter] CD PICTURES [enter] DIR Change to the floppy disk drive, change the current directory, and then list the files. COPY letter.txt letter.bak [enter] Copy the file "letter.txt" to a file called "letter.bak". (Creates "letter.bak" if it does not exist, and overwrites it if it does). COPY A:\pictures\*.pic C:\ [enter] Copy any file with an extension PIC, in the PICTURES directory on the floppy disk drive to the root directory of the hard disk.

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