MMB File Format - hoglet67/MMFS GitHub Wiki

An MMB file stores between 1 and 511 200KB Acorn DFS disk images. Every MMB File has an 8192-byte header which with a signature at the start followed by 511 spaces for the disk titles The first 16 bytes of the file contains a signature which is 00 01 02 03 00 00 .. Each subsequent 16 Bytes stores a disk title (12 characters/ bytes) then padded with 00 00 00 0F. The rest of the file is a collection of 200K Byte SSD images in disk order.