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If I haven't got any backups, is there any way of recovering, or partially recovering the world from a corrupted save file?

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If the first and best answer is to have backups, shouldn't that be an answer, rather than a part of the question? ♪ –  Grace Note Aug 17 '11 at 13:34
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Corrupted world? Declare Exterminatus in the name of the Emperor and purge it with fire. –  James Aug 17 '11 at 17:25
    
Wait, sorry, wrong game. Maybe you could use a map editor and delete the corrupted portions of the map? Also, this might help: minecraftforum.net/topic/… –  James Aug 17 '11 at 17:27
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Overthrow the bourgeoisie? –  Qiaochu Yuan Aug 17 '11 at 17:56
    
Possible duplicate of How do I fix randomly moved chunks after a crash? –  John the Green Aug 17 '11 at 19:35
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5 Answers 5

up vote 3 down vote accepted

Originally found here

  • copy & rename the server world folder into your solo save folder:

C:\documents and settings\USERNAME\application data\.Minecraft\saves

-or-

C:\Users\USERNAME\AppData\Roaming\.minecraft\saves

  • Start & quit a new solo game
  • Copy the .dat files from the new solo game into the corrupted world
  • Start the corrupted world in solo mode to check
  • copy the repaired world back to the server folder & rename

  • If that doesn't work, try deleting the \players folder in that world as a last resort (player data will be lost)

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And "player data will be lost", just to clarify, means all player data. Everything. –  Zsub Aug 17 '11 at 13:29
    
Unless you generate the exact same map, using one worlds level.dat for another world will result in a biome mismatch (meaning snowy deserts and the like). Unless you at least have your original seed, it is impossible to get your world back to its former state. –  John the Green Aug 17 '11 at 15:45
    
Not sure why this was voted down - it fixed my world. The player data is intact. The biomes are the same, we had portals to 3 specific types. Mind you, there are only two of us - but I wouldn't think that would have an impact. –  Kara Marfia Aug 20 '11 at 17:43
    
This worked for me. Thanks! –  Saif Bechan Oct 24 '12 at 22:55
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This wasn't the fix for me, but there's also a Chunkster utility that will verify the world's region chunk files for corruption individually, if the problem happens to be in one of those.

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A useful tool that I've run into out there is something called Minecraft Region Fixer that may be able to help you solve your issue.

Minecraft Region Fixer is a command line-based tool that scans the files of a Minecraft world save and checks the file structures to see if there are corrupted chunks, or if there are other issues with the world save as well.

If you are not familiar with using a command line, it will be pretty easy if you read the author's documentation on his post. He does a good job of being clear and thorough, and hopefully you will be able to use it to solve your problem!

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just delete the world or move the part of the world that is not corrupted into a new world this might work im not sure if there is a chunk missing do the moving into a new world thing or patch it up with world edit. one cause is herobrine or very unstable worlds. if there is void all over the world go back to a file with no void and DO NOT DO THE SAME THING.

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Herobrine is not a thing. Full stop. –  Unionhawk Mar 14 at 3:08
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you can also go back to a file that has no corrupted world and delete the files that are corrupted. if there is mob rain like raining pigs don't ask.just don't stay close or built close to empty chunks you will crash over and over if you try again. if it is serious look at the other answers. or read the minecraft wiki there is answers for sure

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