Downside: A WBFS drive is readable by Windows/macOS without a tool like wit or Wii Backup Manager.
Today, . The recommended format is FAT32 with games stored in wbfs/ folder, each game as GameID.wbfs (and GameID.wbf1 if dual-layer). The extension .wbfs remains, but it’s now a file on a standard filesystem — not the WBFS filesystem. roms wii wbfs