Alternative to FAT for SD cards?

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  • lwext4

    ext2/ext3/ext4 filesystem library for microcontrollers

  • For MCUs the problem is more likely to be finding something sufficiently small to fit in flash. The linux kernel filesystem code is too big and depends on too many other parts of the kernel but there are embedded oriented implementations like https://github.com/gkostka/lwext4 (though I've never tried it)

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