Disk operating system (DOS) is the operating system from Microsoft Corporation that dominated the IBM PC compatible market between 1981 and 1995.
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| - Disk operating system (DOS) is the operating system from Microsoft Corporation that dominated the IBM PC compatible market between 1981 and 1995.
- Disk Operating System (specifically) and disk operating system (generically), most often abbreviated as DOS (not to be confused with the DOS family of disk operating systems for the IBM PC compatible platform), refers to an operating system software used in most computers that provides the abstraction and management of secondary storage devices and the information on them (e.g., file systems for organizing files of all sorts). Such software is referred to as a disk operating system when the storage devices it manages are made of rotating platters (such as hard disks or floppy disks).
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| - Disk Operating System (specifically) and disk operating system (generically), most often abbreviated as DOS (not to be confused with the DOS family of disk operating systems for the IBM PC compatible platform), refers to an operating system software used in most computers that provides the abstraction and management of secondary storage devices and the information on them (e.g., file systems for organizing files of all sorts). Such software is referred to as a disk operating system when the storage devices it manages are made of rotating platters (such as hard disks or floppy disks). In the early days of microcomputing, memory space was often limited, so the disk operating system was an extension of the operating system. This component was only loaded if needed. Otherwise, disk-access would be limited to low-level operations such as reading and writing disks at the sector-level. In some cases, the disk operating system component (or even the operating system) was known as DOS. Sometimes, a disk operating system can refer to the entire operating system if it is loaded off a disk and supports the abstraction and management of disk devices. Examples include DOS/360 and FreeDOS. On the PC compatible platform, an entire family of operating systems was called DOS.
- Disk operating system (DOS) is the operating system from Microsoft Corporation that dominated the IBM PC compatible market between 1981 and 1995.
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