+-------------+------------+---------------+-----------------------------------+
|  Location   | Size in KB |    Content    |             Description           |
+-------------+------------+---------------+-----------------------------------+
| Last sector | 0.5        | Partition     | Loads IBMBIO.COM, IBMDOS.COM to   |
| on disk     |            | Boot Record   | Boot Partition                    |
| less 3MB    |            |               |                                   |
+-------------+------------+---------------+-----------------------------------+
|             | 4.5        | 1. FAT        | File Allocation Table (1. Copy)   |
+-------------+------------+---------------+-----------------------------------+
|             | 4.5        | 2. FAT        | File Allocation Table (2. Copy)   |
+-------------+------------+---------------+-----------------------------------+
|             | 7.0        | Root Directory| Directory of the Data Area        |
|             |            |               | (224 Entries available)           |
+-------------+------------+---------------+-----------------------------------+
|             | 2877.5     | Data Area     | Location of the system programs   |
+-------------+------------+---------------+-----------------------------------+
|             | 128        | IML Image     | Memory Image of POST / BIOS       |
+-------------+------------+---------------+-----------------------------------+
| Last sector | 49.5       | IML MBR       | IML Master Boot Record. (48K are  |
| on disk     |            |               | reserved to account for defective |
|             |            |               | sectors). This boot record will   |
|             |            |               | load the IML-Image. The actual    |
|             |            |               | boot record is 3 sectors in length|
+-------------+------------+---------------+-----------------------------------+

            [Table : System Partition Structure on 90XP / 95XP    ]
            [Source: PS/2 Fundamentals, IBM GG24-3616-00, Page 50 ]