Cursedfs – Make a disk image formatted with both ext2 and FAT at once

Duplicate a couple days ago here: https://news.ycombinator.com/item?id=22055145

I was disappointed to learn that the two filesystems don't actually interact with each other.

My initial impression was that somehow it managed to update the metadata of everything in a way that both FAT and ext2 could read the full disk image.