Emummc (emunand) manual guide

This guide is written for Linux users

By PhazonicRidley

Guide is not finished

This guide is unfinished and may contain errors. Continue at your own risk! This guide is more as something you can hold onto while doing this. Report any errors in the guide to Such Meme, Many Skill#2921 or PhazonicRidley#1432 on Discord.

What you need:

Instructions:

Part 1: The Backup

Before you start:

Make sure you've deleted all your wifi connections on your switch beforehand. It's not a good idea to connect to the internet in emunand. You can add the wifi networks back on sysnand after following this guide.

  1. Boot into hekate and make a boot0/1 and raw gpp backup, you can see the full instructions on how to do this here
  2. Copy these backups to your PC.
  3. Combine the boot0, boot1, and the rawnand backup into a single file, the command to do this is cat boot0.bin boot1.bin rawnand.bin > emummc.bin

If you have you have you nand back up in multiple parts

You can run the above cat command but instead of rawnand.bin you would put each and ever nand backup part eg rawnand.bin.00 rawnand.bin.01 rawnand.bin.02 <etc>

Part 2: The Formatting

  1. Check to make sure gparted is installed (should be with most distros). Open it, and then go to the top right corner and click the correct stoarge device

  2. Create 2 partitions, the last one needs to be 29.3GB in size, the first partition can be filled with the rest of the space available. Please make sure both partitions are FAT32

Part 3: The Flashing

  1. Open a terminal and type lsblk

  2. Locate your SD card in the list of storage devices lsb

  3. Now we are going to use dd to flash your emunand to the second partition

To flash with dd do the following first:

Locate the path to your emunand backup (the file called emummc.bin) this will be your if, or Input File

If the path to your emunand contains a space

you would add a \ to indicate a space, ex if=/home/ubuntu/My\ Folder/emummc.bin alternitivly you may put that folder name in quotes.

Then locate the second, 32GB, partition of the sd card, this will your of. this will be shown as of=/dev/sd*xY*/ replace x with the device letter, and Y with the partition number, eg of=/dev/sdb2 or of=dev/mmcblkp2. lsblk will show you information about your storage devices.

  1. Now we do the actual flashing, run the command sudo dd if=/path/to/emummc.bin of=/dev/sd*xY*/ bs=512M status=progress

Note

This will take quite a while, if you forgot to add the status=progress flag the terminal will not show any output but rest assured, it is flashing

dd

Part 4: Get offset

  1. Open gparted and go to your sd card.
  2. Right click on the partition that you flashed your emunand to and select Information

You should see the following:

sec

Grab the first sector number and run it through a deciamal to hex converter, one can be found here. You will need the hex value later

Part 5: Setup ini

  1. Create a folder on the root of the sd card that YOU DID NOT flash your emunand to called emummc
  2. Create a file in the emummc folder called emummc.ini. Put the following into that ini:
[emummc]
emummc_enabled = 1
emummc_sector = 0x(hex offset)

The hex offset is the hex value you obtained in part 4. this is at most 8 hex characters Replace "(hex offset)" with your obtained hex offset

Now if you boot fusee-primary.bin, you'll instead boot into emunand. You'll see the new black and white Atmosphere logo if you did it successfully.

Your emunand's Nintendo folder can be found in your emummc folder. It will be called something like Nintendo_0000.

Credits:

Thank you to SciresM, m4xw, hexkyz, and ctcaer for making emunand a reality!

Thank you to Such Meme, Many Skill for hosting the guide and providing the orginal structure of the guide.

Lastly thanks to everyone who helped with the creation of this guide.