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{{Refimprove|date=December 2013}}
In [[computing]], a '''system image''' is a [[serialization|serialized]] copy of the entire [[State (computer science)|state]] of a [[computer system]] stored in some [[Computer data storage|non-volatile]] form, such as a binary executable [[Computer file|file]].
If a system has all its state written to a disk (i.e. on a [[disk image]]), then a system image can be produced by copying the disk to a file elsewhere, often with [[disk cloning]] applications. On many systems a complete system image cannot be created by a disk cloning program running within that system because information can be held outside of disks and volatile memory, for example in non-volatile memory like boot ROMs.
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