: The most legal way to acquire ROMs is by "ripping" your own physical discs using tools like CleanRip on a modded Wii.
To run ROMs (technically ISO or WBFS files) on an actual Wii, you must first "softmod" it to run unsigned code. Nintendo Wii Roms
Once modded, you need a way to launch your backup files from external storage. : The most legal way to acquire ROMs
: While original discs are ISOs, many users convert them to .wbfs files to save space and ensure compatibility with FAT32 drives. 3. Legal & Safe Acquisition Nintendo Wii Roms