Moving my 2007.2 to SD to try 2008.8 with fallback solution

[arne anka]

> I guess it may be done from the FR itself... but I'm afraid it's
> difficult to move things from the very live system you're running.

i'd think the only thing to care about would be /var/.
just as idea: rsync the whole of the fr to the sd card and diff after a  
while to see which parts changed. examine these files and see if you need  
to set something to default values.