I've figured out how to get games working from usb to sd.
A few more questions.
How do you delete the NGC from the sd card?
Does it prompt you to delete it if there's not enough space for the next game you try to play?
How can you exit the NGC game and get back to the wii menu?
One question...
Is possible make a link in SD card (like shortcut) and this link read the game into the USB disk?
with this way work around the limitation of read the games only in the SD card