WOOOOOW
I have a Lexar 32GB USB drive that I've been trying to get to work on my Wii for over a year. I'm using USB Loader GX 3.0 and WiiFlow and installed 700 WADs on it, and it's never worked. Every single game comes up as "the system is corrupted" junk.
And NOW someone finally tells me there's a LIST of USB drives that are known to work, and mine isn't on there. I can't believe all my headaches could be caused by the wrong damn USB drive...UGH!