Which device is typically used for non-volatile storage of the operating system?

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Multiple Choice

Which device is typically used for non-volatile storage of the operating system?

Explanation:
Non-volatile storage keeps data even when power is removed, which is essential for preserving the operating system across reboots. RAM and caches are volatile and lose their contents when powered off, so they aren’t suitable for storing the OS long-term. ROM holds firmware and is generally read-only, not the regularly updated OS. The operating system needs a place to reside between sessions, and this role is fulfilled by mass storage like a hard disk (and in modern systems, solid-state drives). The OS is stored on this non-volatile disk and loaded into memory at boot, making the hard disk the typical choice for persistent OS storage.

Non-volatile storage keeps data even when power is removed, which is essential for preserving the operating system across reboots. RAM and caches are volatile and lose their contents when powered off, so they aren’t suitable for storing the OS long-term. ROM holds firmware and is generally read-only, not the regularly updated OS. The operating system needs a place to reside between sessions, and this role is fulfilled by mass storage like a hard disk (and in modern systems, solid-state drives). The OS is stored on this non-volatile disk and loaded into memory at boot, making the hard disk the typical choice for persistent OS storage.

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