Structure of a disk that has been configured with muxboot:


    - MBR
        - orthodox partition table
        - first sector of the main bootloader

    - "manyworlds" partition table
            This is NOT a separate partition.  This would be stored in an unpartitioned sector.

            This isn't necessarily in the same format as the standard partition table.  Regardless,
            it's the information that Switcher needs to be able to reconstruct the main partition
            table.

                    (AKA "multiverse", "another plane", "astral plane")

    - muxboot-Switcher
            Probably on its own partition.  While we could dump a copy in EVERY partition, it would
            make it a pain to upgrade the Switcher code.

    - OS#1 partition

    - OS#2 partition

    - OS#3 partition
    
    ....