A full Wii disc ISO is usually 4.37 GB, but a WBFS file for a game like Wii Sports might only take up about 337 MB because it only keeps the actual game data.
: Most popular Wii homebrew apps, such as USB Loader GX and WiiFlow , are built specifically to read and launch games from this format. Setting Up Your Own Archive
stands for Wii Backup File System . It is a file system proprietary to the Wii. When Nintendo designed the Wii, game discs were formatted in a unique way that standard PC file systems (NTFS, FAT32, exFAT) could not read natively.
In this article, we will explore what WBFS is, how to build your own legal archive, the best sources, the necessary software, and how to play these games on original hardware or emulators.