Also, I suspect that if you do a 5-way install (DSL boots by USB stick from bois and within windows) then the virtual drive will be accessable by both systems.
This is correct. You would want a shared persistent storage, and it is the virtual harddisk. See this thread.uhhhh... i hope someday dsl will have installation setup that lets you choose the thing you need or to let you know what you need...
original here.