IO.SYS

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

In collections

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What Wikipedia says

IO.SYS is an essential part of MS-DOS and Windows 9x. It contains the default MS-DOS device drivers (hardware interfacing routines) and the DOS initialization program.

Excerpt from the Wikipedia article “IO.SYS”, under the CC BY-SA 4.0 license. Read the article on Wikipedia