Disk operating system: differenze tra le versioni

Versione delle 10:23, 21 set 2023

Versione delle 17:59, 21 set 2023

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{{F|sistemi operativi|marzo 2013}}

[[File:IBM PC DOS 1.0 screenshot.jpg|thumb|Schermata di [[PC DOS]] 1.0]]

'''Disk operating system''' ('''DOS''', pronuncia italiana "dòs"), ovvero "''sistema operativo a disco''", è un tipo di [[sistema operativo]] per [[computer]] capace di gestire le [[memoria di massa|memorie di massa]] ad [[accesso casuale]], tipicamente le unità a dischi, e a volte memorizzato esso stesso su disco<ref>{{treccani|dos|DOS|v=1}}</ref>.

Il nome si riferisce a un particolare tipo di [[software]] capace di gestire i dispositivi di [[memoria secondaria]] come [[floppy disk|dischetti]] o [[disco rigido|dischi rigidi]] e le informazioni in essi memorizzate, ad esempio mediante l'utilizzo di [[file system]] per organizzare i [[file]]. Spesso però con ''disk operating system'' ci si riferisce all'intero sistema operativo, se viene caricato da un disco e supporta l'astrazione e la gestione delle unità a disco.

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[[Digital Research]] produsse una variante del suo [[CP/M]] compatibile con il DOS di IBM/Microsoft che mise in vendita come [[DR-DOS]]. Esiste anche una versione [[Free and Open Source Software|FOSS]] denominata [[FreeDOS]].

== Features of DOS : ==

There are some characteristics that make advise operating system stand out:

1. DOS does not support GUIs and does not recognize mouse inputs.

2. Advise operating system controls files and directories and enables the loading and running of programs. It can of manage resource allocation and manage hardware like disc and memory.

3. It is an operating system designed for a single user that performs several functions to ensure systems are running properly.

4. The file allocation is a tabular structure used to hold these IDS.

5. DOS needs a concept of user responsibilities,support a multi-user operating system, and is less secure. Due to its simple interface and few functionalities, it is incredibly light.

== '''Working of DOS:''' ==

The procedure a computer goes thought to start up is called the boot process. For a machine running one of the six — disk operating systems listed below, for example.

1. The Masters Boot Record is read by the read — only memory (ROM) bootstrap loader before it transfers Control to it.

2. The boot record starts the computer by loading the operating system into memory and giving it control.

3. Data from a magnetic dise is transferred to the computer's primary memory, the random access memory.

4. The computer offers serval application programming interface (APIc) for applications, such as character input/output, termination, and managing user input thought a keyboard.

5. The OS further offers file, management, which groups, reads, and writes data stored on storage. A hierarchical system comprising folders, Subdirectories, and files is used to arrange the files.

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==Storia==