IBM Deskstar 120 GXP, Specifications

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4. Advanced usage using protected area
The data in the protected area is accessed by the following method:
i. Issue Read Native Max Address command to get the real device maximum LBA. Returned value
shows that native device maximum LBA is 12,692,735 (C1ACFFh) regardless of the current
setting.
ii. Make the entire device including the protected area accessible by setting device maximum LBA
as 12,692,735 (C1ACFFh) via the Set Max Address command with the volatile option. By using
this option an unexpected power removal or reset will not keep the protected area accessible.
iii. Read information data from protected area.
iv. Issue hard reset or POR to inhibit any access to the protected area.
9.9.2 Security extensions
1. Set Max Set Password
2. Set Max Lock
3. Set Max Freeze Lock
4. Set Max Unlock
The Set Max Set Password command allows the host to define the password to be used during the cur-
rent power on cycle. The password does not persist over a power cycle but does persist over a hardware
or software reset. This password is not related to the password used for the Security Mode Feature set.
When the password is set the device is in the Set_Max_Unlocked mode. The Set Max Lock command
allows the host to disable the Set Max commands (except set Max Unlock) until the next power cycle or
the issuance and acceptance of the Set Max Unlock command. When this command is accepted, the
device is in the Set_Max_Locked mode. The Set Max Unlock command changes the device from the
Set_Max_Locked mode to the Set_Max_Unlocked mode. The Set Max Freeze Lock command allows the
host to disable the Set Max commands (including Set Max UNLOCK) until the next power cycle. When this
command is accepted, the device is in the Set_Max_Frozen mode.
The IDENTIFY DEVICE response word 83, bit 8 indicates that this extension is supported if set, and word
86, bit 8 indicates the Set Max security extension is enabled if set.
Deskstar 120GXP hard disk drive specifications
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