Old School Boot Screen Generator

for the Nintendo Switch

This project has recently undergone a rewrite and is in a testing stage, so you may encounter bugs or issues. If you do, please create an issue on the GitHub Issues page.

Device Settings

Firmware Settings

Bootloader Settings

Hold to enter

Download PNG

About

What is this?

This is a tool to generate Old School BIOS images that emulate classic PCs; it is intended to be used on the Nintendo Switch. Currently the only method to display a splash screen is to use Hekate and enable autoboot.

How do I use this?

  1. 1. Tweak the above image to your liking to generate your custom boot screen.
  2. 2. Download the PNG file
  3. 3. Convert for use with your bootloader
      4. Hekate (Recommended)
    1. Use this tool to convert the png to the bootlogo format.
    2. Save the image as "bootlogo.bmp" and save it in your SD root. For usage with Kosmos, place the file in the bootloader/ folder instead.
      Hekate (Manual)
    1. Convert the image to a 32-bit ARGB bitmap
    2. Rotate the image 90 degress counter-clockwise
    3. Save the image as "bootlogo.bmp" and save it in your SD root. For usage with Kosmos, place the file in the bootloader/ folder instead.
    More information about Hekate's policy on loading a bootlogo can be found here.

Who made this?

  • Harry Peach - Maintainer, rewrote and redesigned the old tool for usage on the Switch.
  • @sebascontre - Idea and programming behind the original 3DS tool.

Can I contribute?

Yes! You can fork the repository on GitHub and then submit a pull request.