It also transfers data to external devices attached to the computer, such as a computer screen or printer.

The computer transfers data stored on a magnetic disk to its main memory, the random access memory.

The boot record loads the disk operating system into memory, and it takes control of the machine.

The read-only memory (ROM) bootstrap loader reads the Master Boot Record and passes control over to it.For a computer running a disk operating system in the following six steps, such as: When a computer is powered on, it goes through various steps called the boot process. It was also the underlying basic operating system on which early versions of Windows ran as a GUI. Microsoft's development was the key product from a programming language company to a diverse software development firm, providing essential revenue and marketing resources. Progressive version releases delivered support for other mass storage media in ever greater sizes and formats and added feature support for newer processors and rapidly evolving computer architectures. Initially, MS-DOS was targeted at Intel 8086 processors running on computer hardware using floppy disks to store and access the operating system, application software, and user data. Several competing products were released for the x86 platform during its lifetime, and MS-DOS went through eight versions until development ceased in 2000. DOS/360 was an OS for IBM mainframes, which first appeared in 1966, but it is unrelated to the 8086-based DOS of the 1980s. Early computers, such as the Commodore 64, Atari 800, and Apple II, all featured a disk operating system, including Commodore Business Machines DOS, Atari DOS, and Apple DOS, respectively. It was gradually superseded by operating systems offering a graphical user interface (GUI) in various graphical Microsoft Windows operating system generations.ĭOS is also used to describe several similar command-line disk operating systems.

MS-DOS was the main operating system for IBM PC compatible personal computers during the 1980s. Sometimes it is referred to as 'DOS', which is also the generic acronym for disk operating system. MS-DOS, its rebranding as IBM PC DOS, and some operating systems attempting to be compatible with MS-DOS. A disk operating system (DOS) is an operating system for x86 based personal computers mostly developed by Microsoft.

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