Revision as of 14:47, 22 April 2019

This page guides you through setting up a backup mod and/or recovering a corrupt world.

Backup Options

Copy everything

Aromabackup

FTB Utilities

Recovery Options

From a zip file

Aromabackup

FTB Utilities

ZOMG! I am an idiot and did not backup my game!

Well, sad times. There are some options you can try here, but they all will require expertise in Minecraft files.

Try looking at the crash log in logs/latest.log and see what may be causing the issue.

Corrupt chunk

If the crash file identifies the corrupt chunk or Region file (each Region file is 16x16 chunks), then you can try these steps

First, backup your level.dat and level.dat_old files.
Delete level.dat and rename level.dat_old -> level.dat
If this works, great! If not, continue...
Copy the whole save folder to create backup. Also save off your Journeymap and tcnodefinder directories now too.
Go through the .mca files in the save dir and delete them one by one to find out which region file is corrupted. If you have an idea which chunk might be causing it, you can look at the pictures in the Journeymap directory to see which region file it may be. The names of the pictures in the Journeymap directory correspond to the region.
Once you know the corrupt .mca file, you can decide to delete or repair it. If the Journeymap for that chunk shows nothing important, it's ok to delete. Minecraft will regenerate the chunks fresh next time you login.
If you need to repair (chunk with base or whatever) use a map editor / NBT editor to import the mca file and edit just the bad block or entities.

@@ Line 18: / Line 18: @@
 === Corrupt chunk ===
 If the crash file identifies the corrupt chunk or Region file (each Region file is 16x16 chunks), then you can try these steps
-- First, backup your level.dat and level.dat_old files.
+* First, backup your level.dat and level.dat_old files.
-- Delete level.dat and rename level.dat_old -> level.dat
+* Delete level.dat and rename level.dat_old -> level.dat
-- If this works, great! If not, continue...
+* If this works, great! If not, continue...
-- Copy the whole save folder to create backup. Also save off your Journeymap and tcnodefinder directories now too.
+* Copy the whole save folder to create backup. Also save off your Journeymap and tcnodefinder directories now too.
-- Go through the .mca files in the save dir and delete them one by one to find out which region file is corrupted.  If you have an idea which chunk might be causing it, you can look at the pictures in the Journeymap directory to see which region file it may be. The names of the pictures in the Journeymap directory correspond to the region.
+* Go through the .mca files in the save dir and delete them one by one to find out which region file is corrupted.  If you have an idea which chunk might be causing it, you can look at the pictures in the Journeymap directory to see which region file it may be. The names of the pictures in the Journeymap directory correspond to the region.
-- Once you know the corrupt .mca file, you can decide to delete or repair it.  If the Journeymap for that chunk shows nothing important, it's ok to delete. Minecraft will regenerate the chunks fresh next time you login.
+* Once you know the corrupt .mca file, you can decide to delete or repair it.  If the Journeymap for that chunk shows nothing important, it's ok to delete. Minecraft will regenerate the chunks fresh next time you login.
-- If you need to repair (chunk with base or whatever) use a map editor / NBT editor to import the mca file and edit just the bad block or entities.
+* If you need to repair (chunk with base or whatever) use a map editor / NBT editor to import the mca file and edit just the bad block or entities.