The CO_RECORD_EXTENSION_WIN2K structure MUST be formatted as follows:

 typedef struct _CO_RECORD_EXTENSION_WIN2K {
   ULONG FieldSize;
   USHORT Major;
   USHORT OffsetCount;
   ULONG Offset;
   ULONG OffsetLast;
   DATA_EXTENSION_CHECKSUM DataChecksum;
 } CO_RECORD_EXTENSION_WIN2K,
  *PCO_RECORD_EXTENSION_WIN2K;

FieldSize: A 32-bit, unsigned integer that indicates the size of structure CO_RECORD_EXTENSION_WIN2K. MUST be 0x00000028.

Major: Version of the CO_RECORD_EXTENSION_WIN2K structure. MUST be 0.

OffsetCount: MUST be 0x0001.

Offset: MUST be 0x00000010.

OffsetLast: MUST be 0.

DataChecksum: DATA_EXTENSION_CHECKSUM structure, as specified in section 2.2.3.7.