All of these loaders require installed on your Wii to grant the console permission to read data from the USB ports instead of the disc drive. Best Practices for Archive Maintenance

To make use of a WBFS archive on original hardware, your Nintendo Wii must be softmodded (hacked) to run homebrew software. Prerequisites: A softmodded Wii with installed.

stands for Wii Backup File System . Unlike standard ISO files, which are a bit-for-bit copy of a disc (often wasting space with "dummy" data), a WBFS file is a compressed format designed specifically for the Wii.

WBFS is a file system designed specifically for storing Wii game backups. It allows users to store multiple games on a single device, such as a hard drive or USB stick, and provides a convenient way to manage and launch games.