Howdy.
Try the wad file below, its a backup loader.
Will boot USB/SD, SDHC if on version 4.0 and supported and Disc.
www.scopeh.co.uk/wads/NeoGammaR3Channel.rar
Download File and copy to SD Card, place into SD ROOT/wad
1. Boot up HBC
2. Load WAD Manager 1.4
3. Using cIOS 249 install the downloaded WAD File.
4. Restart Wii, Neo Channel should be installed.
5. Load up mount the HD and lanuch you backups.
Try with HDD connected and powered before you start the loader
Try starting the loader, connect and power the HD, and then selecct mount WBFS
Try starting the loader, select mount WBFS, connect the HDD, and then power
Try starting the loader, select mount WBFS, power the HDD, and then connect it
Good Luck
Any problems send a pm