I know this is getting tiring - as I seem to be the only one not to get this to work - ironic as I started this, but I gainroot, then run the command to be host mode as noted earlier, and then plug in the USB HD. I get USB device attached, and that's about it. I can run file manager but it doesn't show the drive, it doesn't show the two SD cards so that gives me the impression that it DOES think/know there's an USB device attached. Any ideas?