5.12.11Notch and Partition Page (0Ch)
The Notch and Partition page contains parameters for drives that implement a variable number of sectors per cylinder, and, support this page. Each section of the logical unit with a different number of sectors is referred to as a notch (or band). Each notch must span a set of consecutive logical blocks in the logical unit, the notches must not overlay, and no logical blocks can be excluded from the notches. The data format and field descriptions are described in Table
Table
Byte |
| Bit | 7 | 6 | 5 |
| 4 |
| 3 |
| 2 | 1 | 0 |
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| 0 |
| PS | Rsvd |
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| Page Code (0Ch) |
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| 1 |
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| Page Length (16h) |
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| 2 |
| ND | LPN |
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| Reserved |
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| 3 |
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| Reserved |
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4 | – | 5 |
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| Maximum Number of Notches |
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6 | – | 7 |
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| Active Notch |
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8 – 11 |
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| Starting Boundary |
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12 | – | 15 |
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| Ending Boundary |
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16 | – | 23 |
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| Pages Notched |
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