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| Tracks |
A track is a ring of data on a disk. Unlike a CompactDisc™ (which has one long spiral for a track), the tracks on a floppy or hard disk are a set of concentric rings.
For MFM-formatted disks, the number of sectors per track is constant (but varies by format between 5 and 26). Here are some typical values:
| Bytes per Sector | Sectors per Track |
|---|---|
| 128 | 26 |
| 256 | 16 |
| 512 | 9 or 10 |
| 1024 | 5 |
| Zones |
For standard GCR-formatted disks, the number of sectors per track and recording bit-rate depends on the zone (track# range):
| Zone | Track Numbers | Sectors per Track | Bit Rate | Byte Rate |
|---|---|---|---|---|
| 1 | 1 to 17 36 to 52 | 21 | 307,692 | 38,461.5 |
| 2 | 18 to 24 53 to 59 | 19 | 285,714 | 35,714.3 |
| 3 | 25 to 30 60 to 65 | 18 | 266,667 | 33,333.3 |
| 4 | 31 to 35 66 to 70 | 17 | 250,000 | 31,250.0 |
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