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I am trying to change the UUID of a USB stick formatted with exFAT. I double checked that /dev/sdb2 is the correct target. The entire USB contains one exFAT partition with no empty space. When I try to give a new UUID using tune2fs I get an error message:

root@DESKTOP:/# tune2fs /dev/sdb2 -U random
/sbin/tune2fs: Bad magic number in super-block while trying to open /dev/sdb2
/dev/sdb2 contains a exfat file system

The partition is not corrupt, nor does it contain any corrupted files. What is wrong here?

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