General Guide to Installing Mods
Table of Contents
-----What is this guide about?
Modifying your Minecraft client to install various mods can be quite intimidating to beginners, but at the end of the day it is much worth it if you have already exhausted your interests in Vanilla Minecraft. If you would like to tackle the world of modding, then read on.
If you're wanting to mod on the new 1.6 dev launcher, there is a guide here. I will not be covering how to do so in the new launcher till it is released officially.
Before we start, please remember to backup your minecraft saves!
Installing Your Mod API of Choice
What are Mod APIs?
Mod APIs basically make your mods work, you have to install these first before you can install mods. They essentially provide "hooks" to mod authors so that they may implement so many wonderous things possible in mods today. Please note, that you can only install one, or the other. Installing them together will result in errors.
Oh, is that so? Which one should I choose then?
That very much depends on what mod you are trying to install. But in most cases, you would want to install Forge over ModLoader. Some mods are compatible with both, some are not. So please refer to the instructions the mod authors has provided to determine which one you need, or which one is better suited for compatibility.
Figured out which one you would one to install? Great! But before anything, the most important thing is that you must find your .minecraft folder. The location varies according to Operating System.
Locations of .minecraft said:
Windows Vista/XP: C:\Documents and Settings\*your username*\Application Data\.minecraft
Linux: /home/Your Username/.minecraft
Mac OS/X: ~/Library/Application Support/minecraft
Installing Modloader Manually
What you'll need, download and save them somewhere. If you had chosen to install ModLoader, do not install Forge. If you do not wish to install Modloader, skip to the Forge installation.
Installing Forge Manually
If you have already installed Modloader, skip this. If you have chosen to install Forge, read on. What you'll need, download and save them somewhere.
Installing The Mod APIs via MultiMC:
ZeroLevels and I have compiled a guide on how to install either one of the APIs using MultiMC.
How do I install mods?
Mods are obtained from various sources, such as these very forums, the mod authors' personal site, or the MCF modlist. To install mods, you must have a general understanding on how they work.
- Mods can be divided into 3 categories, jar mods, core mods, and standard mods.
- Jar mods are mods that are installed into the minecraft.jar, and this usually edits the base classes.
- Core mods are mods that allow some other mods to work, an example being CodeChickenCore, which is needed for Not Enough Items, these go in the coremods folder.
- Unless otherwise stated, core mods and mods both go in to the mods folder.
- For mods that modify base classes, such as Optifine, install it after installing Modloader/Forge, and be sure to check if it is compatible.
- In general, ModLoader mods should work fine with Forge if it doesn't edit same classes as Forge.
- Keep in mind ModLoader mods will not work for multiplayer if installed for Forge, and are most often strictly single player only.
-----Installing Mods via MultiMC
No Class Def Found (Minecraft Forge)
Getting crashes? Visit nerd-boy's guide on how to semi-interpret them.