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Crucial operating system files and custom firmware modules required for homebrew applications. The Misconception: Super Mario Galaxy 2 is Not a WAD

WAD stands for (or sometimes “Where’s All the Data?”). It’s a package format used by Nintendo to install Wii Channels, Virtual Console games, and WiiWare titles directly to the Wii’s internal memory or an SD card.

A forwarder is a shortcut icon installed directly onto your Wii System Menu. When you click this channel icon, it automatically launches a homebrew USB loader (like USBLoaderGX or WiiFlow) and boots Super Mario Galaxy 2 directly from your external hard drive. Forwarder WADs are tiny (usually under 5 MB).