In computing, a system image is a copy of the entire state of a computer system stored in some non-volatile form such as a file. A system is said to be capable of using system images if it can be shut down and later restored to exactly the same state. In such cases, system images can be used for backup.
Laptop computer hibernation is an example that uses an image of the entire machine's RAM.
Read more about System Image: Disk Images, Process Images, See Also
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