What component of a computer system holds the operating system when the computer is not running
The same thing that holds the operating system when the computer is running.
It is usually a Hard Drive (HDD) or a Solid State Drive (SDD). I would recommend storing the operating system on the SSD because it loads faster, but a lot of computer's don't have SSD's which is why they are stored on Hard Drive's.
"Hard disk" is the component that holds the OS when the system isn't running.
Thus the above response is right.
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