Terminology

*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:

*KVM* is the module of the Linux kernel that interacts with the virtualization features of the processor.

*QEMU* is the virtualization software that emulates virtual processors and peripherals based on *KVM* and that starts and stops virtual machines.

You can also remove the original ISO image and start directly from the USB stick once Tails is already installed on it. To do so:

Click on **Boot Options** in the left pane.