The Meaning of Life, the Universe, and Everything.
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Does your Minecraft close with an error (stack-trace)? The only reports of worlds getting deleted is when Minecraft crashes. Even if the world still appears to be in your file system, if it is corrupt I believe Minecraft will just ignore it.
I'm not familiar with how Ubuntu works, but the fact that it's showing the level.dat file with a different icon seems to say that something has changed it. I take it when you say "the world randomly disappeared" that it just doesn't show in the world select menu, since it seems you found the folder containing the world files? That would point to a corrupt/damaged level.dat file. It's the file that tells the game how to load that world.
Usually the fix to this is to rename the level.dat_old file to replace the level.dat but it looks like your old file is also corrupt, but you might try it. You could also try creating a new world with the same seed, then using that level.dat file to replace your corrupt one. There's also a chance MC Edit might be able to open the files and save a new level.dat but that's a long shot.
Rollback Post to RevisionRollBack
D_B
To tell them how to live is to prevent them living.
I'm not familiar with how Ubuntu works, but the fact that it's showing the level.dat file with a different icon seems to say that something has changed it. I take it when you say "the world randomly disappeared" that it just doesn't show in the world select menu, since it seems you found the folder containing the world files? That would point to a corrupt/damaged level.dat file. It's the file that tells the game how to load that world.
Usually the fix to this is to rename the level.dat_old file to replace the level.dat but it looks like your old file is also corrupt, but you might try it. You could also try creating a new world with the same seed, then using that level.dat file to replace your corrupt one. There's also a chance MC Edit might be able to open the files and save a new level.dat but that's a long shot.
I don't believe it's Ubuntu's fault because Minecraft is still running through Java. Although I could be wrong, I believe the problem is solely with MC and/or Java. I do agree with you about MC Edit being able to restore his world from its broken condition.
GoochiCraft, what version of Java are you using? I believe you can have multiple installs of Java on an Ubuntu machine which allows you to right click a JAR file and select which version of Java you would like to execute it with. Perhaps you could try another version of Java (perhaps even as far back as Java 6).
No, I didn't mean that it was Ubuntu's fault, just that I'm not familiar with how it displays files, since the files look different (the "good" files appear to be recognized as archives, the "bad" ones as some sort of generic/text file), most likely it was a weird Minecraft glitch that corrupted the level.dat file.
I looked at some I have here with NBT Explorer, and it appears the level.dat_mcr file could contain the needed level information to allow the world to load, but it does not contain player data like inventory, so any items in the player inventory would be gone, and the player would essentially be "reset" to a starting position, but the world should load. In theory, anyway, I didn't try it.
Rollback Post to RevisionRollBack
D_B
To tell them how to live is to prevent them living.
Hey ive recently worked on two worlds for a few hours and somehow they've both been deleted once i save and shut my computer off.
ive located the saves folder and they worlds are in there but some files seem different from the worlds that didnt get deleted.
I'm not sure what to do i run on a Ubuntu operating system and ive read some of the deleted world restore tutorials but nothing seems to work
This is a world save folder that is still showing up on my world list
And this is a saves folder from a world that has randomly disappeared
bump
Does your Minecraft close with an error (stack-trace)? The only reports of worlds getting deleted is when Minecraft crashes. Even if the world still appears to be in your file system, if it is corrupt I believe Minecraft will just ignore it.
I'm not familiar with how Ubuntu works, but the fact that it's showing the level.dat file with a different icon seems to say that something has changed it. I take it when you say "the world randomly disappeared" that it just doesn't show in the world select menu, since it seems you found the folder containing the world files? That would point to a corrupt/damaged level.dat file. It's the file that tells the game how to load that world.
Usually the fix to this is to rename the level.dat_old file to replace the level.dat but it looks like your old file is also corrupt, but you might try it. You could also try creating a new world with the same seed, then using that level.dat file to replace your corrupt one. There's also a chance MC Edit might be able to open the files and save a new level.dat but that's a long shot.
D_B
To tell them how to live is to prevent them living.
I don't believe it's Ubuntu's fault because Minecraft is still running through Java. Although I could be wrong, I believe the problem is solely with MC and/or Java. I do agree with you about MC Edit being able to restore his world from its broken condition.
GoochiCraft, what version of Java are you using? I believe you can have multiple installs of Java on an Ubuntu machine which allows you to right click a JAR file and select which version of Java you would like to execute it with. Perhaps you could try another version of Java (perhaps even as far back as Java 6).
No, I didn't mean that it was Ubuntu's fault, just that I'm not familiar with how it displays files, since the files look different (the "good" files appear to be recognized as archives, the "bad" ones as some sort of generic/text file), most likely it was a weird Minecraft glitch that corrupted the level.dat file.
I looked at some I have here with NBT Explorer, and it appears the level.dat_mcr file could contain the needed level information to allow the world to load, but it does not contain player data like inventory, so any items in the player inventory would be gone, and the player would essentially be "reset" to a starting position, but the world should load. In theory, anyway, I didn't try it.
D_B
To tell them how to live is to prevent them living.