If doing manually (no Wii Backup Manager):
USB:/wbfs/
USB:/wbfs/Super Mario Galaxy [RMGE01]/RMGE01.wbfs
USB:/wbfs/Super Mario Galaxy [RMGE01]/RMGE01.wbf1 (if split)
Even with pristine WBFS files from the Internet Archive, things can go wrong. wii wbfs internet archive
Let’s address the elephant in the room: Is downloading Wii WBFS from the Internet Archive piracy? If doing manually (no Wii Backup Manager): USB:/wbfs/
Technically: Yes. Nintendo owns the copyright to every commercial Wii game. Distributing or downloading these files without a license violates copyright law (DMCA in the US, CDPA in the UK). Even with pristine WBFS files from the Internet
Ethically (the gray area): Many argue that for games that are no longer sold new (out of print) and which cannot be purchased digitally on the Nintendo eShop (shut down for Wii in 2019), downloading a WBFS is "abandonware" preservation.
The "Fair Use" Argument (Weak): If you own the original physical disc, downloading a WBFS is generally considered a "backup." However, courts have ruled that breaking encryption (circumventing the Wii's disc protection) is a violation of the DMCA's anti-circumvention provisions.
The Bottom Line: The Internet Archive hosts these files. Download at your own risk. Nintendo has issued takedowns for first-party titles (Mario, Zelda, Pokémon), but third-party games (EA, Ubisoft, Sega) often remain untouched.