Hi,
from linux, i generally do (see the wiki) :
- sd card
sudo dd if=output/images/recalbox/recalbox.img of=/dev/mmcblk0 bs=40M; sync
- usb key, where X is your usb key, unmounted (and double check that it is not your hard drive)
sudo dd if=output/images/recalbox/recalbox.img of=/dev/sdX bs=40M; sync
However, your suggestion looks very good.
can you prepare the screenshot and the text so that i've just to copy and past it please ?