Got some problems with your WBFS tool, I reformat my partition to FAT32 first with Windows, assign it a drive letter (Q), then I connect it to my Wii and format the partition to WBFS. After that I reconnect the harddisk to my PC and I write wbfs_win.exe Q add "image.iso". Then I get the error "could not open drive: No error".
If I write wbfs_win Q init before connecting it to my Wii - adding an ISO works when doing this - but when I connect it to my Wii after that, the USB loader doesn't recognize it as WBFS (but as 0x7 or something), and formats it itself. Any help?