I have two wiis. Both most current system menu. Ios 249:is v19. 250 is 20b. I haven't cross checked the rest of the ioss. I have a USB wd. 500 gig HD the USB 3.0 It works with USB gx loader on Wii A. But isn't recognized by the other Wii. The other USB loaders don't see it either. I used my USB wd. 250 gig HD on the Wii so I know the Wii is itself working. Can anyone point me in the right direction of what may be off?