EmuNAND and WiiWare in USB Loader GX — Dump, Install and Play

A Wii’s internal NAND flash is small, and every WiiWare title and Virtual Console game you install competes for that space — along with save files and system channels. USB Loader GX’s EmuNAND feature solves this by redirecting channel storage to an SD card or USB drive: you dump (copy) your NAND once, tell GX where the copy lives, and from then on WiiWare and VC channels can be installed to, and launched from, that much larger storage. This guide walks through the dump, the path settings, installing channels, and the save-data rules that keep people out of trouble.

EmuNAND in GX is primarily a channel-storage feature: think of it as moving your downloadable games off the cramped internal memory. It is set up from inside GX’s Settings under the Features area. Before starting, make sure GX itself is installed and current — the Setup Guide and Download page cover that baseline.

Before You Start

• A working USB Loader GX r1283 install on Wii or vWii (on vWii, use only vWii-safe tools for any WAD handling — see the caution below).
• An SD card or USB drive with free space for the NAND dump and the channels you plan to install. A NAND dump is only a few hundred megabytes at most; the channels are what grow.
• A NAND backup made with your usual backup method, kept somewhere safe. The EmuNAND dump is a working copy, not a substitute for a real backup.
• The WiiWare/VC WAD files for titles you own, if you plan to install channels you do not already have on the real NAND.

Step 1 — Dump the NAND

1. Open USB Loader GX and go to Settings > Features.
2. Find the Dump NAND option (labelled along the lines of “Dump NAND to EmuNAND”) and start it. GX copies your NAND contents to the EmuNAND location on SD or USB.
3. Wait for it to finish completely. The dump creates the folder structure GX expects (a nand-style folder tree on the target device). Interrupting it leaves a half-copied NAND that channels will misbehave on — if a dump is interrupted, delete it and run it again rather than patching around it.
4. Confirm the dump exists on the device before moving on: the target should now contain the copied NAND folders and take up visible space.

Step 2 — Point GX at the EmuNAND

1. Back in Settings, open the path settings (Custom Paths / the EmuNAND-related paths) and set the EmuNAND Channel Path to the device and folder that received the dump — for example the SD card or the USB drive.
2. Set the EmuNAND Save Path deliberately too. GX separates where emulated channels live from where emulated save data is written. Pointing both at the same dumped NAND is the normal, predictable choice for most users.
3. In the loader settings, set the EmuNAND mode for channels so GX actually uses the emulated NAND for channel launching (options in this area distinguish between using EmuNAND for saves, for channels, or fully). Choose the mode that matches what you set above, then restart GX so the channel list refreshes.
4. Use the source/filter menu to enable the EmuNAND channels source. Your existing WiiWare and VC titles from the dump should now appear in the GX library alongside disc games, and can be launched from there.

Step 3 — Install WiiWare and VC Channels to EmuNAND

1. In Settings > Features, find GX’s Install WAD to EmuNAND style option (the WAD manager for EmuNAND). Point it at the WAD file for a title you own, stored on SD or USB.
2. Run the install. The channel is written into the emulated NAND on your SD/USB device — not into the console’s real NAND. That is the entire point of doing it this way.
3. Refresh the library (restart GX if the new channel does not appear immediately) and launch the channel once to confirm it starts and can create its save data.
4. Repeat per title. Install one, test one: a single bad WAD is much easier to identify that way than after a batch of ten.

Save Data: The Rules That Matter

The most common EmuNAND confusion is saves “disappearing.” Nothing disappeared — the save location simply depends on the mode. If a channel runs from EmuNAND, its saves are written to the EmuNAND save path; if the same channel is later launched from the real NAND (for example from the Wii Menu), it reads the real NAND saves instead, and the two sets diverge. Pick one home per channel and stick to it. Also note that some titles use save features that do not fully cooperate with emulation; if one specific game’s save behaves oddly, run that title from the real NAND rather than fighting it. Finally, back up the EmuNAND folder when you back up your drive — that folder now contains channels and saves that exist nowhere else.

EmuNAND channels and disc games coexist happily in the GX interface: enable the sources you use, keep the dumped NAND healthy, and WiiWare stops being a storage juggling act. For a different kind of channel work — installing the GX forwarder itself — see our separate forwarder channel guide, which is about the real NAND and follows different rules.

Frequently Asked Questions

What is the difference between EmuNAND Channel Path and EmuNAND Save Path?

The channel path is where the emulated NAND holding your WiiWare/VC channels lives; the save path is where save data for emulated content is written. Most users point both at the same dumped NAND on the same device, which keeps channels and their saves together and easy to back up.

My WiiWare game shows its old save, not my recent progress. Why?

You almost certainly launched it from the other NAND. A channel launched from the Wii Menu uses real-NAND saves; launched from GX with EmuNAND it uses EmuNAND saves. The saves are separate sets. Decide which NAND that channel lives on and always launch it the same way.

Can I delete the EmuNAND and start over?

Yes — delete the EmuNAND folder on the device, run Dump NAND again from Settings > Features, and reinstall any extra channels. Remember that deleting the folder also deletes the channels and saves stored only in EmuNAND, so copy anything you care about first.

Related Guides

• USB Loader GX Forwarder Channel (UNEO)
• Install WADs Safely with YAWM ME
• Nintendont in USB Loader GX — GameCube Setup
• Covers and GameTDB in USB Loader GX

New to the loader itself? Start with the USB Loader GX Setup Guide hub and get the current files from the Download page.