Hitachi IC25N040ATCS04-0 Specifications - Page 107

Set Max Inactive, Set Max Unlocked, Set Max Locked, Set Max Frozen

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Max UNLOCK is issued and the device is locked. When this counter reaches zero, then the Set Max UNLOCK command returns command aborted until a power cycle. 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 password, the Set Max security mode, and the unlock counter do not persist over a power cycle but persist over a hardware or software reset. NOTE: If this command is immediately preceded by a Read Native MAX ADDRESS command, it shall be interpreted as a Set Max ADDRESS command regardless of Feature register value. Set Max Frozen Set Max Locked Set Max Unlocked Set Max FREEZE LOCK SetMax LOCK Set Max UNLOCK Set Max Inactive Set Max SET PASSWORD Figure 69. Set Max security mode transition Hitachi Travelstar 60GH & 40GN hard disk drive specifications 94

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Max UNLOCK is issued and the device is locked. When this counter reaches zero, then the Set
Max UNLOCK command returns command aborted until a power cycle.
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 password, the Set Max security mode, and the unlock counter do not persist over a power cycle but
persist over a hardware or software reset.
NOTE: If this command is immediately preceded by a Read Native MAX ADDRESS command, it shall be
interpreted as a Set Max ADDRESS command regardless of Feature register value.
Set Max Inactive
Set Max SET PASSWORD
Set Max
UNLOCK
Set Max Unlocked
SetMax LOCK
Set Max Locked
Set Max FREEZE LOCK
Set Max Frozen
Figure 69.
Set Max security mode transition
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
94