At high school (in the 1.44mb / w95 era) I encountered a floppy disk that had literally two different filesystems on it depending on what machine you read it in

At high school (in the 1.44mb / w95 era) I encountered a floppy disk that had literally two different filesystems on it depending on what machine you read it in. Not entirely sure how that worked. One machine showed one filesystem, the rest showed another. I guess the alignment on that one particular drive must have been ridiculously far off baseline.