While Minecraft MODs can greatly expand the way you play,
If you install them incorrectly, they can cause serious problems such as world corruption, inability to start, and crashes .
Especially in recent versions (around 1.21),
due to the high frequency of updates and changes in specifications,
the number of cases where “a MOD that previously worked suddenly no longer works” is increasing.
In this article, we will summarize
Things to check before installing a MOD
Procedures for safe installation
Thoughts on how to prevent problems
.
Why is it important to prepare before installing a MOD
MODs directly modify the data structure of the game itself.
Therefore, the following risks always exist:
- World data is rewritten
- Save format changes
- Data remains even after MOD deletion
If introduced without preparation,
it is not uncommon to end up in an “irreversible state”.
Checklist you must do before installing MOD
① Take a backup of the world
This is the most important item.
- Be sure to back up before installation
- If possible, save in a separate folder/drive
For Java version:
- Copy the entire
.minecraft/savesfolder
There is no reason not to do this.
② Check the version of Minecraft itself
MODs are strictly supported.
- Is it compatible with 1.21?
- Is only 1.21.1 compatible
- Has it stopped at 1.20?
If there is even a slight deviation,
problems such as not starting, crashing, or data corruption will occur
.
③ Check the MOD loader type
MOD is loader dependent.
- Forge
- Fabric
- NeoForge
Basically, different loaders cannot be used together.
Most of the causes of “mod not working even though it is installed” are
loader selection errors.
④ See the last update date of the MOD
What is important is not “popularity” but “update status”.
- Not updated for several years
- The author is no longer active
These MODs have a high probability of causing problems with
latest versions.
⑤ Check dependent MODs (prerequisite MODs)
Many MODs are
- Library MOD
- API系MOD
is assumed.
If a dependency is missing,
- Does not start
- Crashes immediately after startup
The following symptoms appear.
Actions you should not do when installing MOD
Insert multiple MODs at once
When a problem occurs,
you don’t know which mod is causing the problem.
Make sure to do so.
- In small quantities
- While checking startup
Please install it.
Introducing into an existing world suddenly
The following MODs are especially dangerous.
- Add new block
- New biome added
- World generation system
The golden rule is to first check the operation on the Test World.
Continue after removing the mod
Depending on the MOD,
even if you delete it, it will still affect the world.
- Block disappears
A backup is also required before deletion.
Basic steps for safe MOD installation
- Back up the world
- Create a test world
- Introduce MODs one by one
- Startup and operation confirmation
- If there are no problems, use in the production world
Just by following this flow,
the probability of trouble occurring will be greatly reduced.
Common problems and causes
| Symptom | Main cause |
|---|---|
| Does not start | Version mismatch |
| Stops at logo< /td> | Insufficient dependent mods |
| Crash after startup | Conflict between mods |
| World corruption | Effects of generation mods |
Who is suitable and who is not suitable for MOD introduction
Suitable people
- You can make backup a habit
- Enjoy troubleshooting
People who are not suitable
- Data loss is unacceptable
- I want to grow 1 World in the long term
In the latter case,
Datapack-centric play is safer.
Summary: MOD is “80% preparation, 20% installation”
- Mods themselves are not dangerous
- Lack of preparation leads to accidents
- Backup is the best insurance
If prepared correctly,
MODs can make Minecraft many times more fun.
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