USB Partition - Use partitioned USB HDDs with the Wii U

Why?

You have asked for it, so here it is...

USB Partition


The Wii U only allows you to format whole USB storage devices to use them for expanding the storage to store Wii U games. This stroopwafel plugin changes this. It lets you use a partition on your USB storage device for storing Wii U games. You can for example have one partition to use in vWii with USB Loaders and then a second Wii U formatted partition to store your Wii U games.

There are two variants of this plugin: the standard one (5usbpart.ipx) only mounts the Wii U formatted partition. The sd variant (5upartsd.ipx) allow you to use a FAT32 partition as a SD card replacement.


If you want instead use a Partition on your SD card as USB storage for Wii U games look here: https://gbatemp.net/threads/sdusb-the-modern-way-to-play-wii-u-games-from-sd-at-full-speed.655744/

Wafel Installer



As a alternative to following this manual guide, you can now use the wafel installer. It guides you through installing the prerequisites, partitioning and setting up the plugin. It is also the only way right now of modding your console without a SD card first.
If you want to follow the manual setup, skip to the next section (Prerequisites)

If you are already using Aroma, put the wafel_installer.wuhb into your wiiu/apps folder on the SD. You find the download here: https://github.com/zer00p/wafel_installer/releases
If you haven't modded your console yet, or lost the SD or SD content, just go to https://wafel.xyz on the Wii U web browser (Internet applet) and you can launch the wafel installer directly from that website.

If you don't have a SD, it asks you if you want to use the USB instead, which will setup the SD emulation version of the plugin. Demo
Installing Aroma is optional.
Stroopwafel and ISFShax are required.
If you are already running homebrew from the SD, you can start the setup of the USB Partition from the USB Partition option in the wafel installer main menu.

Prerequisites

You need two things:
  1. a way to launch minute (usually ISFShax)
  2. a USB Storage device, like an external HDD, SSD or industrial USB Flash drive.
For 1. the recommended way is to setup ISFShax, for that we have a guide here: How to set up ISFShax
If you don't want to commit to installing ISFShax yet you can skip the "Installing ISFShax" step in the ISFShax setup guide and instead run it manually through the chosen exploit on every reboot.
Instead if ISFShax you can also use defuse, in case you have that already.
If you want to use the SD emulation feature, you need to setup ISFShax to run completely from SLC (as you won't have a real SD card to load the files from)

For 2. you find already enough recommendations and people with strong optinions on what to use and what not, so I won't go into much detail there. Generally flash drives use the cheapest of the cheapest garbage flahs and therefore won't last long, even brand ones. So it's generally advised to avoid them or make sure it is really a good one by checking if it gives numbers for TBW and implements wear leveling.

Setup

First of all make a Backup. If anything goes wrong, the whole Disk will be formatted and you lose everything* which was previously on it! You have been warned...

*testdisk might or might not be able to recover something if you are lucky, but do not rely on that.

Partitioning the USB disk​

On Windows you can probably use Disk Management with HDDS. If DIsk Management won't work for you or you have Pen drive you can use a third party tool like Minitool Partition Wizard or Easeus, on Linux you can use gparted.

The general rules are: The partition Table needs to be MBR, not GPT. The first Partition (by number, not physical location) is either ignored or used as SD card (depending on which favor of the plugin you use). If you want to use it as SD card, it needs to be primary (not logical) and formatted FAT32. From the other primary partitions only ones with the NTFS (or exFAT) type will be considered. The phsically last one of those will be chosen and used as (wfs) USB storage.

You can either chose from scratch by deleting all partitions and start from scratch or resize an existing partition to make room.
An example setup would be:
two primary partitions on the USB Disk:
  1. FAT32 - (in gparted set lba flag). Here goes the vWii games and homebrew if you use the SD variant of the plugin.
  2. NTFS - This partition will be seen by the Wii U as "USB", you use to store the Wii U games on (don't assign a drive letter)
Instead of NTFS you can also use exFAT. NTFS won't be the file system the Wii U will be using, it is just there to tell the plugin which partition to use. The Wii U will later format it with it's own file system (wfs).

usbpartiton.png


Installing the Plugin​

Get the latest 5usbpart.ipx (or 5upartsd.ipx for sd emulation) from here: https://github.com/StroopwafelCFW/wafel_usb_partition/releases and place it in your ios_plugins folder. That is either wiiu/ios_plugins on the SD card or /sys/hax/ios_plugins on the slc.


Using the Partition

If you now boot boot back up, the Partition shows up as a USB device, which needs to be formatted and can then be used as usual. Before you start installing stuff on it, I would recommend you connect it back to the PC and check if it worked and the partitions are still there. After formatting the partition, you can also connect an existing USB storage and copy stuff over.

Caveats with the SD emulation


The SD emulation is only present in the Wii U OS. It won't have any affect on vWii and also isn't available in minute. So you can't use it to load the ios_plugins or do backups to in minute.
It should only be used without an actual SD inserted to avoid potential corruption. The Wii U FAT driver only supports one device. If two are connected the one which is detected later is used. If both are connected during bootup the USB one would win, since USB is detected later than the real SD.

Known Problems


Wii VC (including GC) does not work beyond 2TiB. If you are planning to use Wii VC from the eShop or Injects, then don't go beyond 2TiB. The addressing for 4TiB has only be fixed for the Wii U side, but not vWii / HAI IOS.
 
Last edited by SDIO,
Did you actually install ISFShax or just put the files on the SD?
Did you put the plugin in the correct folder? wiiu/ios_plugins?
Yeah, I fully installed it, I saw the green "SUCCESS!" and everything.

It is in the wiiu/iso_plugins folder

EDIT: ive kept trouble shooting, putting the file in the hax folder instead of the wiiu, that didnt work, setting the labels of the partitions as 1 and 2 instead of Wii and wfs, ive tried setting the first partion to logical and the second as primary, instead of both being primary, ive tried setting the first partition to FAT32 instead of exFAT, and a whole combination of these and more. none which seem to work....

I know for a fact that I have ISFShax installed, the hax copy application shows up on the wii u menu and I went fully step by step till I saw the "Success!" after the instalation.

Attached image is how the External HDD shows up after formating on the Wii U
 

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Last edited by SutekiRedux,
Can you show a picture of that text screen that is visible for a moment when booting?
Post automatically merged:

If you installed the plugins to the SLC, then you need to do the haxcopy thing
 
Can you show a picture of that text screen that is visible for a moment when booting?
Post automatically merged:

If you installed the plugins to the SLC, then you need to do the haxcopy thing

When I turn on the Wii U and it asks to format format the HDD? Or when I installed ISFS?

-

Ahh I thought as much once I re-read everything a few times, I don't think installed the plugins to the SLC? But I'm not sure. Is there a way to check?

Im about to head off to work soon but ill send a screenshot/picture once I'm back home.
Post automatically merged:

UPDATE!! I got it to work! for some reason the Wii U didnt like the 5usbpart.ipx file on my SD card, and it had to be on the SLC. Once I put the file in the hax folder, used haxcopy, and formated it, its now properly partitioned. :D
 
Last edited by SutekiRedux,
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My question regarding partitioning is: I have a 4TB drive. On my Wii, I have a NTFS partition for Wii games and a FAT32 partition for Nintendont. Would I be able to do the same thing but add a 2TB partition at the end for WFS?
 
Yes. But if you want to use the SD emulation, the first partition should be FAT32. Also Wii VC games won't work form the Wii U partition, if it is beyond the first 2TIB
 
Yes. But if you want to use the SD emulation, the first partition should be FAT32. Also Wii VC games won't work form the Wii U partition, if it is beyond the first 2TIB
1778648320174.png
So I'd format the drive like this (maybe move the GC partition to be sde1)? Then I'd put my WBFS files in sde1, my Nintendont files in sde2, and the Wii U would format sde3? I don't plan on launching games through Wii VC, I'd rather they be loaded from USB Loader GX anyway.
 
I'd like to recommend that portable SSD, Kootion 2TB, it works great on Wii U without Y cables great speed, no heat. Good price.
KOOTION External SSD USB C Portable SSD.jpeg
 

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I'd like to recommend that portable SSD....

As I understand it, SSDs should only be used in systems that send the TRIM command to the drive to inform it of free blocks. Otherwise, the drive’s performance will deteriorate. The Wii U is not one of these systems.
 

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