struct _MMSUBSECTION_NODE// Size=0x18
{
    union _unnamed_681 u;// Offset=0x0 Size=0x4
    unsigned long StartingSector;// Offset=0x4 Size=0x4
    unsigned long NumberOfFullSectors;// Offset=0x8 Size=0x4
    union _unnamed_738 u1;// Offset=0xc Size=0x4
    struct _MMSUBSECTION_NODE * LeftChild;// Offset=0x10 Size=0x4
    struct _MMSUBSECTION_NODE * RightChild;// Offset=0x14 Size=0x4
};