FermiumBooter

FermiumBooter

Simplistic mixin mod utility to allow developers to load mixins both early and late

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288.8K Downloads
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About this Mod

FermiumBooter is a mixin mod utility to allow developers to load mixins both early and late, allowing for modifying classes that normally could not be modified otherwise.

Current features include;

  • Enqueue mixins to be applied both early and late, to allow for for modifying Vanilla/Forge classes, as well as mod classes

  • @MixinConfig annotation system to expand on the Forge @Config system, to allow for automatic mixin enqueue based on config toggles

  • Optional compatibility handling through the config annotation system to allow developers to define required/incompatible mods for specific mixins

  • Logged warnings when a mixin using the config annotation system fails compatibility checks

  • Optional forced mixin disabling when a mixin using the config annotation system fails compatibility checks

  • Ingame (disable-able) warning rendering when mixins using the config annotation system fail compatibility checks

  • Enable/disable enqueued mixins prior to application through the use of a Supplier, to allow developer control over optional mixins

  • Utility method to check if a ModID is present similar to Loader.isModLoaded() however usable during mixin enqueue/early mixin application unlike Loader.isModLoaded()

  • Disallow other FermiumBooter enqueued mixins from applying, for testing or tweaking purposes

  • Shadows Mixin 0.8.7 and MixinExtras 0.4.1

For developer usage:

In your IFMLLoadingPlugin init, instead of "Mixins.addConfiguration("mixinConfigName")", use "FermiumRegistryAPI.enqueueMixin("mixinConfigName").
If you are registering it as a late-loaded mixin use "FermiumRegistryAPI.enqueueMixin(true, "mixinConfigName")".
That is all that is required, and FermiumBooter takes care of the rest.
For additional utilities as described previously, all are documented in code with explanations of usage and purpose.

If you have any issues/suggestions/requests, please post them to the Github issue tracker linked above.

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Available Versions

1.4.1release
MC 1.12.2forge
November 21, 2025
1.4.0release
MC 1.12.2forge
October 28, 2025
1.3.2release
MC 1.12.2forge
August 4, 2025
1.3.1release
MC 1.12.2forge
July 16, 2025
FermiumBooter-1.3.0release
MC 1.12.2forge
July 7, 2025

How to Install FermiumBooter on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.12.2).

3

Install Mod

Open the mod browser in the dashboard and search for "FermiumBooter". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

forge

Minecraft Versions

1.12.2

Server-side

~ Optional

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

FermiumBooter server crashes on startup – what to do?

Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.12.2). You can switch loaders with one click in the panel.

Is FermiumBooter compatible with forge?

FermiumBooter officially supports forge for Minecraft 1.12.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with FermiumBooter – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if FermiumBooter consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install FermiumBooter with just one click on your server.

Recommended RAM
4 GBfrom €5.2/mo
Minimum 3 GB | per 8 players
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
GNU Lesser General Public License v3.0 or later
Server-side
Optional

Supported Versions

1.12.2