What is an operating system?

What is an operating system? Here are some definitions.

Noun (software) Software that controls the allocation and usage of hardware resources such as memory, CPU time, disk space, and input and output devices. Find more words! 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The most reliable way to sanitize a computer is to wipe the hard disk clean and then reinstall its operating system from scratch. It allows these applications to run, without recompilation, under a 64-bit operating system in long mode. I have one or two criticisms of this operating system, because errors of the kind that I made should be recoverable but are not. Primarily, the software handles operating system reinstalls and hardware configuration on its own. And it assumes that applications are well-behaved enough to use the protection facilities in the operating system. See Also What is another word for operating system? Sentences with the word operating system Words that rhyme with operating system What is the plural of operating system? Translations for operating system Nearby Definitions operating room tables operating room table operating rooms operating-room operating room operating losses operating-system operating systems operating table operating tables operating theatre operating-theatre