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Virtual Machine Technology Overview

Virtual machine (VM) technology provides the following main features:

Notes: 1. "Primary operating system" (primary OS) denotes the operating system that controls the I/O devices of the computer and that loads when the real computer is turned on.

2. "Guest operating system" (guest OS) is an operating system that runs under virtual machine control. One primary OS and multiple guest OSes can be run at the same time on a single real computer.