File systems don't come in power of 2 sizes. They come in arbitrary numbers of blocks. Most storage devices have a power of 2 block size. But not all.[1] [1] h

File systems don't come in power of 2 sizes. They come in arbitrary numbers of blocks. Most storage devices have a power of 2 block size. But not all.[1] [1] https://en.wikipedia.org/wiki/Data_Integrity_Field https://en.wikipedia.org/wiki/Data_Integrity_Field