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SCSI Description
5-80 Maxtor Atlas 10K III
The Rigid Disk Geometry Page describes the drive geometry. The data format and
field descriptions are described in Table 5-96 and Table 5-97 respectively.
Rigid Disk Geometry Page-(Page 4)
Rigid Disk Geometry Page-Field Descriptions (Page 4)
0 PS Rsvd Page Code (04h)
1 Page Length (16h)
2 - 4 Number of Cylinders
5 Number of Heads
6 - 8 Starting Cylinder - Write Precompensation
9 - 11 Starting Cylinder - Reduced Write Current
12 - 13 Drive Step Rate (0)
14 - 16 Landing Zone Cylinder
17 Reserved RPL
18 Rotational Offset
19 Reserved
20 - 21 Medium Rotation Rate
22 - 23 Reserved
PS 1
Parameters Savable. This bit is only used with the MODE SENSE
command. A returned value of 1 indicates that the target is ca-
pable of saving the page in a non-volatile, vendor-specific loca-
tion. The bit is reserved with the MODE SELECT command.
Number of Cylin-
ders
17338 The number of physical cylinders that hold host data.
Number of Heads 3/5/10/20 The number of heads that can access host data.
Starting Cylinder 17338 The value in this field is the physical cylinder at
Write
Precompensation
which write precompensation is to begin. The first cylinder num-
ber is 0. If the starting cylinder is equal to the value in the Number
of Cylinders field, write precompensation is disabled.
Starting Cylinder -
Reduced Write
Current
0
The value in this field is the physical cylinder at which write cur-
rent is reduced. The first cylinder number is 0. If the starting cyl-
inder for reduced write current is equal to the value in the Number
of Cylinders field, reduced write current is disabled.
Drive Step Rate 0 Applies to stepper-motor actuators. Not applicable.
Landing Zone
Cylinder
17338
This field indicates a two’s complement location where the drive
positions the disk heads. A negative value indicates that the
heads are positioned below cylinder 0 by that number of cylin-
ders. A positive value greater than the number of cylinders indi-
cates that the heads are positioned beyond the cylinders used for
data storage at the location specified.