We must address the elephant in the room: software is legal. Formatting a drive and backing up your own Wii games (ISOs ripped from original discs you own) is protected in many jurisdictions under fair use.
WBFS Manager serves as a graphical interface for computers to interact with hard drives formatted specifically for the Wii. Historically, the Wii required its own unique file system (WBFS) to launch games from USB devices. This program allowed users to: drives to the WBFS standard. wbfs manager 64 bits