Disk Organization - Xerox 7250 Reference Manual

Top: sectors numbered 0, 1, ••• ,
15
Bottom: sectors numbered 0, 1, ••• , 15
Sector marks
Rotation
Typical Sector
Top: even-numbered tracks 0,2, ••• ,406
Bottom: odd-numbered tracks
1,3, ••• ,407
Track
406
Track
404
2
o
Typical track
1
~ ~~-A----B------------------------------1.56cmsec------------------D----E----F----G-----H~-~I
1
30
116
I
fJSec fJSec
t
1
byte
tt
5
bytes
10
Disk Organization
1.
152
msec
ttt
9 bits
Figure
7.
Disk Organization
1
3.213.21179.213.41173.2
J.lSec
~ec
fJSec fJSec jJSec