Prebuilt Image Install
Prebuilt image install is used to write an OS distribution to your virtual machine, booting in to that environment from a fresh install.
Available in the VPS console using option 9.
For RedHat-derived distributions, Kickstart1 is the installation method producing a prebuilt image. For Debian and its derivatives, Preseed2 is the method producing a prebuilt image. In both cases, the install is provided with a configuration file containing answers to the questions it would ask in a netboot install.
prebuilt image source material is available for reference.