This page allows you to select how a virtual system is booted. This typically
determines if it uses its own kernel, or the kernel version from the host
system. Not all boot methods are available for all virtual systems - for
example, one without a kernel installed will not be able to boot from it.
You can also select whick virtual disk device the system will boot from. When
creating an empty system this might be initially set to the CD-ROM, but can be
changed to the hard disk after creation is complete.