+--------+----------+--------+-------+-------+-------+-------+------+----------+
| Clear  | Extended | Header | Block | Data  | Block | Data  | File | Sentinel |
| Leader | File Gap | Block  | Gap   | Block | Gap   | Block | Gap  | File     |
+--------+----------+--------+-------+-------+-------+-------+------+----------+
                        ^                ^
                        |                |
                        |                +
                        +                 \
                         \            128(decimal) Bytes
                     32(decimal) Bytes