Wii Iso Page

Wii discs are roughly 4.37 GB, but many games don't actually use all that space; the rest is filled with "garbage data" to fill the disc. Because of this, the "story" of the ISO often involves conversion into more efficient formats:

A format that strips away the empty data to save space on hard drives. WII ISO

An even smaller, "compressed" version of an ISO designed for long-term storage. Wii discs are roughly 4