In the previous example the MBR from a drive that only had one partition, was demonstrated. So where is the information stored if there are multiple partitions?
The information is stored in the remaining bytes within the MBR – from 462 to 510. i.e All of the partition information is from 446 to 510 – a total of 64 bytes. The final two bytes (511 and 512) in the MBR are the “magic numbers”. (Remember that the MBR is 1 sector, which is 512 bytes)
Below is the location of the partition information, within the MBR. Attached is the same information in about the MBR in PDF format
Partition Table #1
| Offset (within MBR) | Information | Length |
| 446 | Active (80=Active) | 1 |
| 450 | Partition Type | 1 |
| 454 | Sectors Preceding Partition 1 | 4 |
| 458 | Sectors in Partition 1 | 4 |
Partition Table #2
| Offset (within MBR) | Information | Length |
| 462 | Active (80=Active) | 1 |
| 466 | Partition Type | 1 |
| 470 | Sectors Preceding Partition 2 | 4 |
| 474 | Sectors in Partition 2 | 4 |
Partition Table #3
| Offset (within MBR) | Information | Length |
| 478 | Active (80=Active) | 1 |
| 482 | Partition Type | 1 |
| 486 | Sectors Preceding Partition 3 | 4 |
| 490 | Sectors in Partition 3 | 4 |
Partition Table #4
| Offset (with MBR) | Information | Length |
| 494 | Active (80=Active) | 1 |
| 490 | Partition Type | 1 |
| 502 | Sectors Preceding Partition 4 | 4 |
| 506 | Sectors in Partition 4 | 4 |
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