How to build an .img

[Bastien]

Hi all,

OLPC France is creating customization keys (including the 802 version of
the OS) to help update the 100 XOs (soon to be 150) that children use in
Madagascar, Nosy Komba.

We'd like to get rid of the initial message "Do you want to update the
software and the activity?" - children won't be able to connect to the
internet for now (we're working on this.)

James told us to get rid of the /home/olpc/.sugar-update file, which is
fine, but how to exclude this file from the customization key?

How to build a modified os802_fr.img (and its friend fs.zip)?  We don't
plan to distribute this image.

Thanks for any hint,

-- 
 Bastien