os 8.2 on SD for boot?

[Chris Marshall]

I would like to put the current 8.2
release onto an SD card for booting
(with a developer's key) to allow
me to better support my family and
friends XOs.

Right now, any customizations such
as printer support or additional
applications get wiped whenever there
is an os update.

The thought was to maintain the
official XO os on the internal NAND as
a safe default but to use the SD card
OS for routine use.

The catch is I haven't gotten far
enought up the learning curve to
tweak the ofw and the default config
of the release distribution for this
purpose.

If anyone has a recipe to follow for
this modification or even a list of
things to fix (item by item) so I can
research the wiki and mailing lists
it would be a huge help.  I visit my
folks this weekend and would like to
set things up then if possible.

Thanks,
Chris