1---------- 2About QEMU 3---------- 4 5QEMU is a generic and open source machine emulator and virtualizer. 6 7QEMU can be used in several different ways. The most common is for 8:ref:`System Emulation`, where it provides a virtual model of an 9entire machine (CPU, memory and emulated devices) to run a guest OS. 10In this mode the CPU may be fully emulated, or it may work with a 11hypervisor such as KVM, Xen, Hax or Hypervisor.Framework to allow the 12guest to run directly on the host CPU. 13 14The second supported way to use QEMU is :ref:`User Mode Emulation`, 15where QEMU can launch processes compiled for one CPU on another CPU. 16In this mode the CPU is always emulated. 17 18QEMU also provides a number of standalone :ref:`command line 19utilities<Tools>`, such as the ``qemu-img`` disk image utility that 20allows you to create, convert and modify disk images. 21 22.. toctree:: 23 :maxdepth: 2 24 25 build-platforms 26 emulation 27 deprecated 28 removed-features 29 license 30