Copy WII backups
From RpWiki
If you ever need to copy a already backuped wii game, just use dd and burn the resulting iso file.
dd if=/dev/dvd of=/path/to/game.iso
Afterwards burn the game.iso with your favorite burn tool.
The image size is either:
4699979776 bytes (4.7 GB) copied
or
4700307456 bytes (4.7 GB) copied