Exit Zen
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[[!inline pages="doc/advanced_topics/virtualization.caution" raw="yes" sort="age"]]
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<p><i>virt-manager</i> is the only virtualization
solution that allows to use a Persistent
Storage. See [[running Tails from a USB
image|virt-manager#usb_image]].</p>
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*virt-manager* is based on a set of lower level virtualization tools,
going from the user interface to the hardware interactions with the
processor. This terminology is a bit confusing and other documentation
might mention the following tools:
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*KVM* is the module of the Linux kernel that interacts with the virtualization features of the processor.
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*QEMU* is the virtualization software that emulates virtual processors and peripherals based on *KVM* and that starts and stops virtual machines.
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*libvirt* is a library that allows *virt-manager* to interact with the virtualization capabilities provided by *QEMU*.
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*SPICE* is a protocol that allows to visualize the desktop of virtual machines.
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*virt-manager* is the graphical interface that allows to create, configure, and run virtual machines.
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To install *virt-manager* in Debian, execute the following command:
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To install *virt-manager* in Ubuntu, execute the following command:
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Start *virt-manager*.
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If you get the error message "<span class="guilabel">Error starting
domain: Requested operation is not valid: network 'default' is not
active</span>", then try to start the default virtual network:
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Then do the following:
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Click on the **Add Hardware** button on the bottom of the left pane.
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Select **USB Host Device** in the left pane.
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In the right pane, click on the device from which you want to run Tails, and click **Finish**.
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<a id="disconnect"></a>
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You can also disconnect the original ISO image and start directly from the USB stick once Tails is already installed on it. To do so:
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Shut down the virtual machine.
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