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//0x34 bytes (sizeof)
struct _DEVICE_MAP
{
    struct _OBJECT_DIRECTORY* DosDevicesDirectory;                          //0x0
    struct _OBJECT_DIRECTORY* GlobalDosDevicesDirectory;                    //0x4
    VOID* DosDevicesDirectoryHandle;                                        //0x8
    volatile LONG ReferenceCount;                                           //0xc
    ULONG DriveMap;                                                         //0x10
    UCHAR DriveType[32];                                                    //0x14
};