In the early days of Wii modding, you had to format an entire USB drive to the WBFS partition type. However, modern homebrew apps now allow you to store on standard FAT32 or NTFS drives, making "WBFS Archive" a term generally used to describe a curated collection of these game files. Why Use WBFS Instead of ISO?
You can fit hundreds of games on a single 1TB drive.
While FAT32 has a 4GB file limit, WBFS managers automatically split larger games (like Super Smash Bros. Brawl ) into two files (game.wbfs and game.wbf1) so they work perfectly. How to Build and Manage Your WBFS Archive Wbfs Archive
The WBFS Archive: A Complete Guide to Managing Wii Game Backups
For your Wii to recognize your archive, the files must be organized like this on the root of your USB drive: USB:/wbfs/Game Name [GameID]/GameID.wbfs Example: USB:/wbfs/Mario Kart Wii [RMCE01]/RMCE01.wbfs Preservation and the "Archive" Mentality In the early days of Wii modding, you
These are 1:1 copies of the disc. They are always 4.37 GB, regardless of whether the game is a massive RPG or a tiny puzzle game.
If you look at a standard Wii disc, it contains exactly 4.37 GB of data. However, many Wii games don't actually use that much space; the rest is filled with "garbage data" or padding to fill the disc. You can fit hundreds of games on a single 1TB drive
Many collectors keep a "Master Archive" on a large cold-storage HDD in ISO format for 100% accuracy, then export a "Play Archive" in WBFS format to their active Wii console to save space and reduce load times. Safety and Legality