HP 7957A Hardware Manual page 35

571'7803
Sector
Track
Head
HP 7957A
HP 7958A
There is
Theory Of Operation
7957/7958
SELF-TEST TRACK
GUARD TRACK
TRACK 0 - MAINTENANCE LOG.
1013 DATA TRACKS
6 SPARE TRACKS
GUARD TRACK
SELF-TEST TRACK
LANDING ZONE
• FOR DISC DRIVES WITHOUT AN EEPROM.
Figure 3-1. Disc Recording Format
Table 3-1. Disc Drive Capacity
Data Bytes Sectors
Tracks Heads
Per Per Per Per
256
16, 128 63
16,337,664 63,819 1013
81,688,320 319,095 5,065 5
130,701,312 510,552 8,104
8
one spare sector per track and six spare tracks per head.
3-3