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This is a list of disk operating systems with the acronym DOS as part of the name (e.g., TRSDOS for the TRS-80 line of computers). Many are (or were in
List of disk operating systems called DOS
List_of_disk_operating_systems_called_DOS
Operating system focused on disk-based file operations
A disk operating system (DOS) is a computer operating system that requires a hard disk (HDD), floppy disk, solid-state drive (SSD), or other direct-access
Disk_operating_system
Events in the history of 16-bit x86 DOS-family disk operating systems
of events in the history of 16-bit x86 DOS-family disk operating systems from 1980 to present. Non-x86 operating systems named "DOS" are not part of the
Timeline of DOS operating systems
Timeline_of_DOS_operating_systems
Family of operating systems for IBM PC compatibles
operating systems, DOS is a platform-independent acronym for disk operating system, whose use predates the IBM PC. Dozens of other operating systems also
DOS
Microsoft computer operating system
MS-DOS (/ˌɛmˌɛsˈdɒs/ em-ess-DOSS; acronym for Microsoft Disk Operating System, also known as Microsoft DOS) is an operating system for x86-based personal
MS-DOS
RDOS Real-time Disk Operating System, with variants: RTOS and DOS (not related to PC DOS, MS-DOS etc.) CTOS Cassette Tape Operating System for the Datapoint
List_of_operating_systems
Discontinued family of computer operating systems
mass-market operating system created in 1974 for Intel 8080-based microcomputers by Gary Kildall of Digital Research, Inc. CP/M is a disk operating system and
CP/M
Topics referred to by the same term
up dos, Dos, DoS, DOS, dós, dōs, dös, döş, or døs in Wiktionary, the free dictionary. Dos or DOS may refer to: Disk operating system List of disk operating
Dos
Computer operating system
PC DOS and MS-DOS was DOS, which is also the generic term for disk operating system, and is shared with dozens of disk operating systems called DOS. The
IBM_PC_DOS
Comparison of operating systems List of operating systems Comparison of real-time operating systems Timeline of DOS operating systems Timeline of Linux distributions
Timeline_of_operating_systems
versions of MS-DOS, IBM PC DOS, and at least partially compatible disk operating systems. It does not include the many other operating systems called "DOS" which
Comparison of MS-DOS compatible operating systems
Comparison_of_MS-DOS_compatible_operating_systems
commands provided by the MS-DOS disk operating system (DOS), especially as used on an IBM PC compatible computer. Other DOS variants as well as the legacy
List_of_DOS_commands
Creation of accessible areas on secondary storage device
that the operating system reads before any other part of the disk. Each partition then appears to the operating system as a distinct "logical" disk that uses
Disk_partitioning
Computer filing system
file system in MS-DOS 2.0 and later versions of MS-DOS and in Microsoft Windows, the NTFS file system in the Windows NT family of operating systems, and
File_system
Way for programs to access kernel services
Generally, systems provide a library or API that sits between normal programs and the operating system. On Unix-like systems, that API is usually part of an implementation
System_call
also a variety of BSD and DOS operating systems, covered in comparison of BSD operating systems and comparison of DOS operating systems. The nomenclature
Comparison of operating systems
Comparison_of_operating_systems
API of the MS-DOS operating system
The DOS API is an API which originated with 86-DOS and is used in MS-DOS/PC DOS and other DOS-compatible operating systems. Most calls to the DOS API
DOS_API
IBM mainframe operating system designed for use with smaller machines
Disk Operating System/360, also DOS/360, or simply DOS, is the discontinued first member of a sequence of operating systems for IBM System/360, System/370
DOS/360_and_successors
File system used by MS-DOS and Windows 9x
because of its compatibility across operating systems and embedded systems, and ease of implementation. FAT was used on hard disks throughout the DOS and
File_Allocation_Table
Apple II disk operating system
ProDOS is the name of two similar operating systems for the Apple II line of personal computer. The original ProDOS, renamed ProDOS 8 in version 1.2, is
Apple_ProDOS
Computer operating system for x86 processors
PTS-DOS (also punctuated as PTS/DOS) is clone of Microsoft's disk operating system, MS-DOS, developed in Russia by PhysTechSoft and Paragon Technology
PTS-DOS
Aspect of computing history
Computer operating systems (OSes) provide a set of functions needed and used by most application programs on a computer, and the links needed to control
History_of_operating_systems
Disk diagnostic utility for MS-DOS and Windows 9x
ScanDisk (also called ScanDisk) is a diagnostic utility program included in MS-DOS and Windows 9x. It checks and repairs file systems errors on a disk drive
Microsoft_ScanDisk
MSDOS-like operating system
DR-DOS /ˈdiː ˈɑɹ dɑs/ (often pronounced as Doctor DOS /dɒktər dɑs/ by its users) is a disk operating system for IBM PC compatibles, originally developed
DR-DOS
Removable disk from which a computer can boot an operating system
operating systems use different boot disk contents. All boot disks must be compatible with the computer they are designed for. MS-DOS/PC DOS/DR-DOS A
Boot_disk
Family of disk operating systems
Apple DOS is the disk operating system for the Apple II computers from late 1978 through early 1983. It was superseded by ProDOS in 1983. Apple DOS has
Apple_DOS
8-bit graphical operating system
the third-most-popular microcomputer operating system in the world in terms of units shipped, trailing only MS-DOS and Mac OS (besides the original Commodore
GEOS_(8-bit_operating_system)
Family of IBM operating systems
is a family of virtual machine operating systems used on IBM mainframes including the System/370, System/390, IBM Z and compatible systems. It replaced
VM_(operating_system)
First sector of partitioned PC computer disk
intended for use with IBM PC-compatible systems and beyond. The concept of MBRs was publicly introduced in 1983 with PC DOS 2.0. The MBR holds the information
Master_boot_record
Open source clone of MS-DOS
systems. FreeDOS can be booted from a floppy disk or USB flash drive and is designed to run well under virtualization or x86 emulation. The FreeDOS project
FreeDOS
Computer file with a storage device's contents
or similar systems the dd program can be used to create raw disk images. Apple Disk Copy can be used on Classic Mac OS and macOS systems to create and
Disk_image
Series of Macintosh operating systems
Mac operating systems have been developed by Apple in a succession of two major series. In 1984, Apple debuted the operating system that is now known
Mac_operating_systems
8-bit operating system by Microsoft
MSX-DOS is a discontinued disk operating system developed by Microsoft's Japan subsidiary for the 8-bit home computer standard MSX, and is a cross between
MSX-DOS
Computer files in nested directories
128 KB. IBM PC DOS and MS-DOS 1.0 inherited the same structure. DOS 2.0, which supported hard disk drives, introduced a hierarchical file system. The hierarchical
Hierarchical_file_system
Operating system by Apple
protected memory, as in most modern operating systems. These separate applications cannot use non-reentrant calls like QuickDraw, however, and thus could
Copland_(operating_system)
systems. Many older operating systems support only their one "native" file system, which does not bear any name apart from the name of the operating system
List_of_file_systems
Logical or physical division of storage media
will have the remainder of their last sector filled with zeroes. In practice, operating systems typically operate on blocks of data, which may span multiple
Disk_sector
Computer operating system
(SCP) for its Intel 8086-based computer kit. 86-DOS shared a few of its commands with other operating systems such as OS/8 and CP/M, which made it easy to
86-DOS
DOS. The Complete Guide to the 1541 Disk Operating System. Data most & Reston (Prentice-Hall). ISBN 0-8359-3091-2. Weyhrich, Steven (2005), "The Disk
Floppy_disk_variants
File system used on Amiga computers
support DOS\6 or DOS\7, which it predates, or formatting of devices. Amiga portal List of file systems OFS Professional File System Smart File System Berkeley
Amiga_Fast_File_System
Graphical operating system (16-bit)
computer operating environment, graphical user interface (GUI), and suite of application software. Originally released as PC/GEOS, it runs on MS-DOS-based
GEOS (16-bit operating system)
GEOS_(16-bit_operating_system)
Low level firmware interface to the hardware
invoked by operating systems and application programs to use the facilities of the firmware on IBM PC compatible computers. Traditionally, BIOS calls are mainly
BIOS_interrupt_call
Floppy disk drive for the Apple II computer
The Disk II Floppy Disk Subsystem, often rendered as Disk ][, is a 5 +1⁄4-inch floppy disk drive designed by Steve Wozniak at the recommendation of Mike
Disk_II
on-disk directory entry structures themselves, as well as those imposed by operating systems across all file systems. Particular Installable File System
Comparison_of_file_systems
Alphabetical assignment to logical drives on computers (e.g., C:\)
initially absent from these systems. This was a major feature of UNIX and other similar operating systems, where hard disk drives held thousands (rather
Drive_letter_assignment
Computer operating system
family of operating systems. Windows 95 RTM reports it as MS-DOS 7.0, and Windows 95 OSR 2.x and Windows 98 report as 7.1. The real-mode MS-DOS 7.x is
MS-DOS_7
Family of CP/M- and DOS-compatible multi-user multi-tasking operating systems
evolution of the older Concurrent CP/M-86, Concurrent DOS and Concurrent DOS 386 operating systems, it was originally developed by Digital Research and
Multiuser_DOS
Electro-mechanical data storage device
A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical computer data storage device that stores and retrieves digital data
Hard_disk_drive
Discontinued operating system for x86 processors
DOS Plus (erroneously also known as DOS+) was the first operating system developed by Digital Research's OEM Support Group in Newbury, Berkshire, UK, first
DOS_Plus
Vendor-neutral file system, used in practice for DVDs and other optical discs
Universal Disk Format (UDF) is an open, vendor-neutral file system for computer data storage for a broad range of media. In practice, it has been most
Universal_Disk_Format
Variant of PC DOS/MS-DOS developed for Japan
proprietary PC-98 system, which was the market leader before DOS/V emerged. DOS/V stands for "Disk Operating System/VGA" (not "version 5"; DOS/V came out at
DOS/V
Optimized Systems Software (OSS) was a company that produced disk operating systems, programming languages with integrated development environments, and
Optimized_Systems_Software
allows part of a computer's RAM (memory) to be seen as if it were a disk drive, with volume name and, if supported by the operating system, drive letter
List_of_RAM_drive_software
Computer system that provides behavior needed by running code
convenience of our exclusive SpeedStart single-disk system. SpeedStart is a special version of the powerful CP/M-86 operating system that's built into each of our
Runtime_system
Single-tasking operating system for the Motorola 6800
FLEX is a discontinued single-tasking operating system developed by Technical Systems Consultants (TSC) of West Lafayette, Indiana, for the Motorola 6800
FLEX_(operating_system)
Operating system
DOS, also known as CBM DOS, is the disk operating system used with Commodore's 8-bit computers. Unlike most other DOSes, which are loaded from disk into
Commodore_DOS
Automatic, disk-wide data compression
software. Operating systems pre-installed on new computers with bundled disk compression included: DR DOS 6.0 (1991) Bundled with a custom version of SuperStor
Disk_compression
Disk operating system of the AmigaOS
AmigaDOS is the disk operating system of the AmigaOS, which includes file systems, file and directory manipulation, the command-line interface, and file
AmigaDOS
Core of a computer operating system
critical parts of the operating system. The kernel performs its tasks, such as scheduling processes, managing hardware devices such as the hard disk, and handling
Kernel_(operating_system)
File system for AmigaOS
the so-called DiskDoctor provided by Commodore quickly earned the name DiskDestroyer, because it could not repair No-DOS type autostart disks provided
Amiga_Old_File_System
First Microsoft employee
developed an 8-bit operating system called M-DOS or MIDAS; the system itself was never released by Microsoft, but its file system (a variant of FAT) influenced
Marc_McDonald
Firmware for hardware initialization and OS runtime services
run legacy operating systems such as MS-DOS or DR-DOS that rely heavily on BIOS for their console and disk I/O, providing that the system has a BIOS,
BIOS
Historical account
The history of IBM mainframe operating systems is significant within the history of mainframe operating systems, because of IBM's long-standing position
History of IBM mainframe operating systems
History_of_IBM_mainframe_operating_systems
1977–1993 series of microcomputers
The first disk operating systems for the Apple II were DOS 3.1 and DOS 3.2, which stored 113.75 KB on each disk, organized into 35 tracks of 13 256-byte
Apple_II
Proprietary file system by Apple
file system format, it is well-documented; there are usually solutions available to access HFS-formatted disks from most modern operating systems. Apple
Hierarchical File System (Apple)
Hierarchical_File_System_(Apple)
Command line utility of DOS and Microsoft Windows operating systems
PC/XT computer (the first PC to store data on a hard disk) and the IBM PC DOS 2.0 operating system. fdisk version 1.0 can create one FAT12 partition, delete
Fdisk
Feature for restoring computer files
file systems or operating systems support undeletion. Undeletion is possible on all FAT file systems, with undeletion utilities provided since MS-DOS 5.0
Undeletion
Home computer/personal computer released by Philips Austria
640 KiB Keyboard: mechanical, with 93 keys Operating system: DOS Plus (in 64 KiB ROM), MS-DOS, Concurrent DOS Storage: two 3½-inch drives, 720 KiB each
Philips_:YES
A floppy disk is a disk storage medium composed of a thin and flexible magnetic storage medium encased in a rectangular plastic carrier. It is read and
History_of_the_floppy_disk
Computer program that runs as a background process
exclusively in the context of Unix-based systems. In other contexts, different terms are used for the same concept. Systems often start daemons at boot
Daemon_(computing)
Video game character from the Portal series
GLaDOS (Genetic Lifeform and Disk Operating System) is a fictional character in the video game series Portal, created by Erik Wolpaw and Kim Swift, and
GLaDOS
1980 office desktop computer
system and is capable of limited multi-tasking, it is not a general purpose operating system like DOS or CP/M. Instead, it IPLs directly to a menu of
IBM_Displaywriter_System
User-definable variable associated with each running process in many operating systems
operating system flavors and variants from that point onward including Linux and macOS. From PC DOS 2.0 in 1982, all succeeding Microsoft operating systems
Environment_variable
32-bit Disk Access (also known as FastDisk) refers to a special disk access and caching mode available in older, MS-DOS-based Microsoft Windows operating systems
Microsoft_32-bit_disk_access
Defunct computer technology company
Apple DOS for the Apple II to enable using Corvus's 10 MB Winchester technology hard disk drives. Apple DOS normally was limited to the usage of 140 KB
Corvus_Systems
Disk operating system
DOS XL is a discontinued Disk Operating System (DOS) written by Paul Laughton, Mark Rose, Bill Wilkinson, and Mike Peters and published by Optimized Systems
DOS_XL
Process of salvaging inaccessible data from corrupted or damaged secondary storage
of the programs listed. CHKDSK: a consistency checker for DOS and Windows systems Disk First Aid: a consistency checker for the classic Mac OS Disk Utility:
Data_recovery
IBM computer model from 1960s
optional. Operating System choices: BPS - Basic Programming Support BOS - Basic Operating System TOS - Tape Operating System DOS - Disk Operating System BPS
IBM_System/360_Model_30
Software responsible for starting the computer
boot choices then it is often called a boot manager. When a computer is turned off, its software—including operating systems, application code, and data—remains
Bootloader
Process of starting a computer
range of customized disk copy protection mechanisms. (See Software Cracking: History.) Some operating systems, most notably pre-1995 Macintosh systems from
Booting
1999 Microsoft operating system version
Windows 2000 is a major release of the Windows NT operating system developed by Microsoft, targeting the server and business markets. It is the direct
Windows_2000
Operating system based on the Linux kernel
distributions as alternatives to MS-DOS compatible operating systems, Windows, Classic Mac OS, and proprietary versions of Unix. Most early adopters were familiar
Linux_distribution
Architecture of computer operating systems
MS-DOS. They are 16-/32-bit hybrids and require support from MS-DOS to operate. To start up or boot, Windows 95 and other Windows 9x operating systems require
Architecture_of_Windows_9x
System file (DOS BIOS) in PC DOS and DR-DOS
is a system file in many DOS operating systems. It contains the system initialization code and all built-in device drivers. It also loads the DOS kernel
IBMBIO.COM
Subsystem for 32-bit Windows for running 16-bit DOS & Windows programs
DOS machines (VDM) are a technology that allows running 16-bit/32-bit DOS and 16-bit Windows programs when there is already another operating system running
Virtual_DOS_machine
Software that manages computer hardware resources
most popular operating system for microcomputers. Later, IBM bought a disk operating system from Microsoft, which IBM sold as IBM PC DOS and Microsoft
Operating_system
Filesystem API
Installable File System (IFS) is a filesystem API in MS-DOS/PC DOS 4.x, IBM OS/2 and Microsoft Windows that enables the operating system to recognize and
Installable_File_System
Executable file format
Windows operating systems, as well as in UEFI environments. It is used for native executables (.exe, .com), dynamic link libraries (.dll, .ocx), system drivers
Portable_Executable
Removable disk storage medium
A floppy disk, diskette, or floppy diskette is a type of disk storage made from a thin, flexible disk coated with a magnetic storage medium. It is enclosed
Floppy_disk
Technology for maintenance of file systems
to disk fail. FAT: MS-DOS 6.x and Windows 9x-systems come with a defragmentation utility called Defrag. The MS-DOS version is a limited version of Norton
Defragmentation
System file (DOS kernel) in PC DOS and DR-DOS
the MSX-DOS operating system. The FAT file system specific code is called the FDOS in DRI terminology. IBMBIO.COM MSDOS.SYS List of DOS system files Paul
IBMDOS.COM
Multitasking operating system released 1986
MS-DOS 4.0 was a multitasking release of MS-DOS developed by Microsoft based on MS-DOS 2.0. Lack of interest from OEMs, particularly IBM (who previously
MS-DOS_4.0_(multitasking)
Comprehensive list of features of x86-based computers
contemporary literature. A large part of it covers system BIOSes and internals of operating systems such as MS-DOS, OS/2, and Windows, as well as their
Ralf_Brown's_Interrupt_List
Family of computer operating systems
UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, the development of which started in 1969
Unix
Text string used to uniquely identify a computer file
application. Some file systems on a given operating system (especially file systems originally implemented on other operating systems), and particular applications
Filename
Signal in the system bus of an x86-based computer system
(pulled high) at the processor Intel System Programmers Manual Vol. 3A from June 2013. 86-DOS - Disk Operating System for the 8086 - Programmer's Manual
A20_line
1982 DEC microcomputer
Documentation Volume 1 (QV025-GZ), Microsoft MS-DOS Operating System BIOS Listing (AA-X432A-TV), Universal Disk Driver, Page 1-17. 1983. "Rainbow LAN Controller"
Rainbow_100
Operating system for Tandy TRS-80 computers
TRSDOS (Tandy Radio Shack Disk Operating System) is the operating system for the Tandy TRS-80 line of eight-bit Zilog Z80 microcomputers sold through
TRSDOS
Midrange IBM computer from 1960s
Disk and Tape Operating Systems are comprehensive sets of language translators and service programs operating under the supervisory coordination of an
IBM_System/360_Model_50
architecture device, used on DOS/VSE and VM, the only S/370 operating systems that supported FBA devices. The sister unit was called the IBM 3375 and used count
History of IBM magnetic disk drives
History_of_IBM_magnetic_disk_drives
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LIST OF-DISK-OPERATING-SYSTEMS-CALLED-DOS
LIST OF-DISK-OPERATING-SYSTEMS-CALLED-DOS
LIST OF-DISK-OPERATING-SYSTEMS-CALLED-DOS
LIST OF-DISK-OPERATING-SYSTEMS-CALLED-DOS
LIST OF-DISK-OPERATING-SYSTEMS-CALLED-DOS
LIST OF-DISK-OPERATING-SYSTEMS-CALLED-DOS
LIST OF-DISK-OPERATING-SYSTEMS-CALLED-DOS
LIST OF-DISK-OPERATING-SYSTEMS-CALLED-DOS
LIST OF-DISK-OPERATING-SYSTEMS-CALLED-DOS
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