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Edit: No BoP please!
Also I had an idea but don't know if it's possible. I wanted to make my base in a volcano, but this structre generation is not related to the seed I think (as meteorites). I wanted the volcano in the ice plains biome so I thought I could generate a lot of worlds with this biome near the spawn, search for a volcano in the biome in creative mode and when I found it, delete the player data folder and change the level.dat to don't allow comands. This way I will start a survival map where I know there's the volcano I wanted but without a trace of creative mode. Do you think this is possible?