User Manual

SCSI Commands Reference Manual, Rev. J 460
www.seagate.com Parameters for direct access devices
5.3.32 Rigid Drive Geometry Parameters page (04h)
This mode page has been declared obsolete by the T10 committee. However, it is included because it may be implemented on
some products.
The Rigid Drive Geometry Parameters page implementation is defined in Table 433 . This table summarizes the function and
defines the default value.
PS (Parameter Savable) bit
The Parameter Savable (PS) bit of 1 indicates that page 04 parameter data is savable and is saved when a Format Function is performed. In
some drives an exception exists that applies to bytes 17 and 18. In the exception drives, bytes 17 and 18 are only saved if the SMP bit in the
MODE SELECT command (Table
70) is 1. See individual drive’s Product Manual, Volume 1, SCSI bus conditions and miscellaneous features sup-
ported.” This PS bit is not applicable to the MODE SELECT command.
SPF bit
The SPF bit is described in 5.2.2 and shall be set as shown in table 433.
Table 433 Rigid Drive Geometry Parameters page (04h)
Bit
Byte
7 6 5 4 3 2 1 0
0 PS SPF (0b) PAGE CODE (04h)
1 PAGE LENGTH (16h)
2 NUMBER OF CYLINDERS (MSB)
3 NUMBER OF CYLINDERS
4 NUMBER OF CYLINDERS (LSB)
5 NUMBER OF HEADS
6,7,8 STARTING CYLINDER—WRITE PRECOMP
9,10,11 STARTING CYLINDER—REDUCED WRITE CURRENT
12,13 DRIVE STEP RATE
14,15,16 LANDING ZONE CYLINDER
17 000000 RPL
18 ROTATIONAL OFFSET XXh
19 Reserved
20 (MSB)
MEDIUM ROTATION RATE
21 (LSB)
22 Reserved
23 Reserved