Deskstar 7K160 Hard Disk Drive Specification
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12.38.3 Set Max Unlock (Feature = 03h)
Table 136: Set Max Unlock command (F9h)
If this command is immediately preceded by a Read Native Max Address command, the device regards it as Set
Max Address command
This command requests a transfer of a single sector of data from the host including the information specified in
Table 133: “Set Max Set Password command” on page 222 with the stored SET MAX password.
If the password compare fails, the device returns an abort error to the host and decrements the unlock attempt
counter. This counter is initially set to 5 and is decremented for each password mismatch. When this counter
reaches zero, all Set Max Unlock commands are rejected until a hard reset or a power off occurs.
If the password compare matches, the device sets the Set_Max_Unlocked state and all Set Max commands are
accepted.
Command Block Output Registers
Command Block Input Registers
Register
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Data
- - - - - - - -
Data
- - - - - - - -
Feature
0 0 0 0 0 0 1 0
Error
see below
Sector Count
- - - - - - - -
Sector Count
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder High
- - - - - - - -
Device/Head
1 - 1 D - - - -
Device/Head
1 - 1 D - - - -
Command
1 1 1 1 1 0 0 1
Status
see below
Error Register
Status Register
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
CRC
UNC
0
IDN
0
ABT
T0N
AMN
BSY RDY
DF
DSC
DRQ
COR IDX
ERR
0
0
0
0
0
V
0
0
0
V
0
-
-
0
-
V
Summary of Contents for Deskstar 7K160
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Page 297: ...Write Buffer 249 Write cache function 93 Write Continuous bit 102 Write DRQ interval time 30 ...