I'm reading the KB article and seems honestly a bit too complicated. I think this workaround (http://www.virtualtothecore.com/en/rest ... -recovery/
) may be quicker, as you end up mounting the restored disk as a slave to the original VM. Another option is to use virtual lab and retrieve the files from the restored vm.
Editing the ISO machine is possible, but totally unsupported and a bit tricky to be done.