_TAPE_SET_POSITION

headersMetadatacopy
struct _TAPE_SET_POSITION {
    unsigned long Method;/* 0x0  4 */
    unsigned long Partition;/* 0x4  4 */
    union _LARGE_INTEGER Offset;/* 0x8  8 */
    unsigned char Immediate;/* 0x10  1 */
};
/* computed from WINNT.H, NT 4.0 SDK */