Quantum Q250

TRACKS
QUAL.
AREA
50us
PRE
AMBLE
'-
'-
SERVO
TRACKS
I /
-~~~-j
+ 10i
/
/
TO
CENTER
OF DISK
1
SERVO & DATA
TRACK
LAYOUT
----T----- -
STo~A~
/
/
/
/ 105
c=J [
/ 104
/
/
rr---w...---I--<- /
'-
'-
'-
S
Y
N
C
/ 103
/
PRE
AMB
LE
~ I e
'-
'-
'-
'-
'-
TRACK
NO.
\
102
101
S
Y
N
C
'-
'-
'-
'-
'-
P
0
S
'-
T
DATA
512 BYTES
452us
DETAIL
OF A BURST
E
C
C
~
CHECKSUM
{
HEAD NO. (BURSTS A&C)
SECTOR NO. (BURSTS B&D)
P
0
S
T
[
LOGICAL~
TRACK NO.5
DETAIL
OF
ONE SECTOR
12 BYTES
Figure 2-3: Disk Format: Wedges, Sectors, and Tracks
2-5