Set Max Freeze Lock (Feature = 04H); Figure 124. Set Max Freeze Lock (F9H) - IBM DTLA-305040 - Deskstar 41.1 GB Hard Drive Specifications

12.29.4 Set Max Freeze Lock (Feature = 04h)

Command Block Output
Registers
Register
Data
Feature
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Error Register
7 6 5
CRC UNC 0
0 0 0

Figure 124. Set Max Freeze Lock (F9h)

If the Set Max Freeze Lock command is immediately preceded by a Read Native Max Address
command, this command is regarded as a Set Max Address command.
The Set Max Freeze Lock command sets the device to Set_Max_Frozen state. After command complet-
ion any subsequent Set Max commands are rejected. Commands disabled by Set Max Freeze Lock are
the following:
1. Set Max Address
2. Set Max Set PASSWORD
3. Set Max Lock
4. Set Max Unlock
7 6 5 4 3 2 1 0
- - - - - - - -
0 0 0 0 0 1 0 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 - 1 D - - - -
1 1 1 1 1 0 0 1
4 3 2 1 0
IDN 0 ABT T0N AMN
0 0 V 0 0
Deskstar 40GV & 75GXP hard disk drive specifications
Command Block Input
Registers
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
Status Register
7 6 5 4
BSY RDY DF DSC
0 V 0 –
162
7 6 5 4 3 2 1 0
- - - - - - - -
see below
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 - 1 D - - - -
see below
3 2 1 0
DRQ COR IDX ERR
– 0 – V