Format your USB external hard drive or SD card to the file system. (Note: While the old WBFS file system format exists, FAT32 is universally recommended today because it allows you to store homebrew apps and other files on the same drive).
The community has discovered some key points to ensure the game works flawlessly. punchout wii rom wbfs work
Dolphin is the most popular emulator for GameCube and Wii games. Using a WBFS file in Dolphin is straightforward. Step 1: Install Dolphin Emulator Format your USB external hard drive or SD