Use this safety checklist before adding Aether Mod to an existing Minecraft profile or world. This article keeps the process focused on file identity, compatibility, backups and controlled testing.
Back up the complete world folder
Copy the entire save, not only region files. Dimension data, player data, advancements and mod-specific data can all matter.
Copy profile configuration
Preserve the current mods list, config folder and launcher settings so you can reconstruct the working state.
Test in a duplicate profile
A duplicate profile isolates changes and prevents accidental overwriting of the configuration you already use.
Keep the backup untouched
Do not open or modify the backup during testing. Restore from a clean copy only after closing Minecraft and the launcher.
Final checklist
- Record the exact Minecraft and loader versions.
- Keep a clean backup outside the active profile.
- Use only files intended for the selected environment.
- Test before opening important worlds.