Security Extensions - Hitachi T7K250 - Deskstar - Hard Drive Specifications

3. Conventional usage without system software support
Since the drive works as a 6.2 GB device, there is no special care required for normal use of this device.
4. Advanced usage using protected area
The data in the protected area is accessed by the following steps.
i. Issue Read Native Max ADDRESS command to get the real device maximum LBA. Returned value shows
that native device maqximum LBA is 12,692,735 (C1ACFFh) regardless of the current setting.
ii. Make entire device accessible, including the protected area, by setting device maximum LBA as 12,692,735
(C1ACFFh) via the Set Max ADDRESS command with the volatile option. By using this option,
unexpected power removal or reset will prevent the protected area from remaining accessible.
iii. Read information data from protected area.
iv. Issue hard reset or POR to inhibit any access to the protected area.

10.9.2 Security extensions

• Set Max Set Password
• Set Max Lock
• Set Max Freeze Lock
• Set Max Unlock
The Set Max Set Password command allows the host to define the password to be used during the current 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 T7K250 Hard Disk Drive Specification
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