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DOS

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This page is not malware, despite having an article on the Wiki.

File:350px-FreeDOS Beta 9 pre-release5 (command line interface) on Bochs
sshot20040912.png
The FreeDOS startup sequence.

DOS, short for "Disk Operating System", is a shorthand term for several closely
related operating systems that dominated the IBM PC compatible market between
1981 and 1995, or until about 2000 if one includes the partially DOS-based
Microsoft Windows versions Windows 95, 98, and ME. After the DOS-based operating
systems in Windows came the NT kernel-based operating systems.

Mac OS and Windows both once ran on DOS.

File:PC-DOS.PNG
Picture of PC-DOS 6.30, IBM's Disk Operating System prior to MS-DOS.

Related systems include MS-DOS, PC DOS, DR-DOS, FreeDOS, PTS-DOS, ROM-DOS,
JM-OS, Atari DOS, and several others.

In spite of the common usage, none of these systems were named simply "DOS" (a
name given only to an unrelated IBM mainframe operating system in the 1960s). A
number of unrelated, non-x86 microcomputer disk operating systems had "DOS" in
their name, and are often referred to simply as "DOS" when discussing machines
that use them (e.g. AmigaDOS, AMSDOS, ANDOS, Apple DOS, Atari DOS, Commodore
DOS, CSI-DOS, ProDOS, and TRS-DOS). While providing many of the same operating
system functions for their respective computer systems, programs running under
any one of these operating systems would not run under others.

DOS systems first ran on Floppy disks. There were two types of Floppy disks DOS
systems were on, 3.1" and 5.1". Since the size was small (Up to but not
exluding) 2MB. DOS systems were very basic and ran on simple commands. The two
most known operating systems that people recognize first are Windows 1.0 and
Macintosh OS. There were two types of DOS. GUI DOS-Based-Systems and actual
Command Prompt DOS systems. GUI DOS-Based-Systems are most fondly remembered for
being "revolutionary" for their time. They modernized the DOS system and after
the GUI DOS-Based-Systems came the Windows we know and (possibly) love. But the
first DOS systems some people remember mostly is MS-DOS and Basic. These were
the Command Prompt DOS systems.

There are many DOS viruses out there, the first being Brain, though there are
some more notorious ones like CMOSDead. While some DOS viruses doesn't work on
Windows or other operating systems, if it is run on Windows 9x, it may cause the
system to be unstable and cause multiple Blue Screens of Death.


EXTERNAL LINKS

 * MS-DOS Reference — MS-DOS commands; many also apply to other DOSes on the PC
   platform.
 * Timeline of DOS and Windows versions

Retrieved from "https://malwiki.org/index.php?title=DOS&oldid=32821"

Categories:
 * Non-Malware
 * Operating systems
 * Disk operating systems
 * DOS

Hidden category:
 * Pages with broken file links




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