Comment by Dylan16807

Why would you need a map or overhead?

Each frame gets the same amount of the file, about a kilobyte. So each frame is basically a sector. You need to read in a few extra frames to undo the compression, but otherwise it's just like a normal filesystem. And reading in a batch of sectors at once is normal for real drives too.

Even if you did need the frames to be self-describing, you could just toss a counter/offset in the top left corner for less than 1% overhead.