I tried this:
- burn Live ISO on Flash Drive with dd
- from my PC, use mandriva tool or gparted (I tried both) to create a second partition with remaining space
- boot on Live USB, mount second partition
Then the second partition is automatically mount in read only mode, and I wasn’t able to solve the problem.
Note that this could be a solution if I could make my demo completely portable, what I’m not sure.
With persistence, I would be able to specify a file, perhaps on the second partition, that would contain all modifications of the Live install: install of packages (with some limitations), account settings,…
So after a reboot I would have my customized Live USB, and it could be a real solution.