Let me repeat that:
The Wii Caretaker’s Guide: Why You Need a NAND Backup (And How to Make Your Own) Wii Nand Backup Download
Disclaimer: This guide is for educational and preservation purposes. Modifying your console may void warranties and violates Nintendo's EULA. Proceed at your own risk. Let me repeat that: The Wii Caretaker’s Guide:
RetroReviver Reading time: 5 minutes
You do not need a "full" permanent mod to do this. Use str2hax or LetterBomb to load the HackMii Installer. Wii Nand Backup Download