disk operating system
Definition
- Noun:
- A computer operating system that resides on and is loaded from a disk storage device: A "disk operating system" is a type of operating system whose core files are stored on a disk (historically, a floppy disk or hard disk) and must be loaded from that disk into the computer's memory to function. It is often abbreviated as DOS.
Usage Examples
- Noun:
- Early personal computers required a disk operating system to be booted from a floppy disk.
- The most famous disk operating system was MS-DOS, developed by Microsoft.
Advanced Usage
- Historical Context: The term "disk operating system" is strongly associated with the early era of personal computing (1980s-1990s). It often implies a command-line interface (CLI) where users type text commands, contrasting with modern graphical user interface (GUI) operating systems.
- Before Windows, many users interacted directly with a disk operating system through a command prompt.
Variants and Related Words
- DOS (n): The common acronym for "disk operating system."
- MS-DOS and PC DOS were the dominant DOS versions for IBM-compatible computers.
- MS-DOS (n): A specific, proprietary disk operating system from Microsoft.
- PC-DOS (n): The version of DOS marketed by IBM for its personal computers.
- DR-DOS (n): A disk operating system developed by Digital Research, a competitor to MS-DOS.
Synonyms
- Command-line operating system: An operating system primarily controlled by typing commands.
- Single-tasking OS: (For early versions) An operating system that can run only one application at a time.
Related Phrases
- Boot from DOS: To start a computer using a disk operating system.
- You need to boot from DOS to run some legacy diagnostic tools.
- DOS prompt / Command prompt: The on-screen interface where commands are typed in a disk operating system.
- Type 'dir' at the DOS prompt to list the files on the disk.
Related Idioms
- (Stuck in) the DOS era: A phrase used to describe outdated technology or methods.
- Their office filing system is practically stuck in the DOS era; everything is done with text files and cryptic commands.
Noun
-
an operating system that is on a disk
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