disk operating system

disk op·er·at·ing sys·tem

D d

Definitions of disk operating system words

noun disk operating system DOS. 1
noun Definition of disk operating system in Technology (operating system) (DOS) The original disk operating system from IBM. DOS was the low-end OS of choice on the IBM 360, the high-end system was called just "OS". DOS had a smaller kernel and less functionality than OS and could run on the typical 32K 360/30 and 64K 360/40 class machines. DOS was a successor to TOS. 1
noun Technical meaning of disk operating system (operating system) (DOS) The name of a number of operating systems which include facilities for storing files on disk, often used to refer to Microsoft DOS. Such a system must handle physical disk I/O, the mapping of file names to disk addresses and protection of files from unauthorised access (in a multi-user system). A DOS should present a uniform interface to different storage device such as floppy disks, hard disks and magnetic tape drives. It may also provide some kind of locking to prevent unintentional simultaneous access by two processes to the same file (or record). 1
noun disk operating system an operating system used on a computer system with one or more disk drives 0

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This term is known only to a narrow circle of people with rare knowledge. Only 1% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

This diagram is provided by Google Ngram Viewer

dos — any of several single-user, command-driven operating systems for personal computers, especially MS DOS.
os — Anatomy, Zoology. a bone.

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