typedef struct _DISC_LAYOUT {
  LONG m__LONG__NumberOfEntries;
  DISC_LAYOUT_ENTRY m__DISC_LAYOUT_ENTRY[ NUMBER_OF_TRACKS ];
  LONG m__LONG__NumberOfRawRawPWTracks;
  LONG m__LONG__RawRawPWTrackSizeInLBs[ NUMBER_OF_TRACKS ];
} * PDISC_LAYOUT, DISC_LAYOUT;