Only "thinking out loud" here, and why this question is under programming.
QUERY: Would it be feasible to engineer Slackware Zipslack as a guest install inside V/BOX2 as opposed to a standard linux distro guest install since Zipslack is designed to piggyback on top of a DOS/Fat16 or a Fat32 filesystem, let alone, with extremely low RAM requirements?
http://www.slackware.com/zipslack/ (http://www.slackware.com/zipslack/)
Could this be a "programming shortcut" for V/BOX2?