Figure 10.2 Moving head disk mechan

Figure 10.2 Moving head disk mechanism.
typically 512 bytes; there are about 50,000 to 100,000 tracks per platter, and 1 to
5 platters per disk. The inner tracks (closer to the spindle) are of smaller length,
and in current-generation disks, the outer tracks contain more sectors than the
inner tracks; typical numbers are around 500 to 1000 sectors per track in the inner
tracks, and around 1000 to 2000 sectors per track in the outer tracks. The numbers
vary among different models; higher-capacity models usually have more sectors
per track and more tracks on each platter.