IBM IC25N020ATDA04 Hard Drive Specifications - Page 104

Operation from POR after user password is set, Command table for device lock operation

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11.8.5.3 Operation from POR after user password is set When the Device Lock Function is enabled, the device rejects the media access command until a Security Unlock command is successfully completed. POR Device Locked mode Unlock CMD Password Match ? N Y Erase Prepare Erase Unit Password Match ? Y N Media Access Non-media Access Command (*1) Command (*1) Enter Device Unlock mode Complete Erase Unit Reject Complete Lock function Disable Normal operation : All commands are available Freeze Lock command Enter Device Frozen mode Normal Operation expect Set Password, Disable Password, Erase Unit, Unlock commands. (*1) - refers to the commands in Figure 68, "Command table for device lock operation" on pages 92 and 93. Figure 66. Usual operation Travelstar 48GH, 30GN & 15GN hard disk drive specifications 90

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11.8.5.3 Operation from POR after user password is set
When the Device Lock Function is enabled, the device rejects the media access command until a
Security Unlock command is successfully completed.
POR
Device Locked mode
Unlock CMD
Command (*1)
Command (*1)
Password
Erase Unit
Password
Match ?
Reject
Complete
Complete
Erase Unit
Lock function
Disable
Normal operation
:
All commands are available
Freeze Lock command
Enter Device Frozen mode
Normal Operation expect Set Password,
Disable Password, Erase Unit, Unlock commands.
Enter Device
Unlock mode
N
Y
N
Y
Erase Prepare
Media Access
Non-media Access
Match ?
(*1) — refers to the commands in Figure
68,
"Command table for device lock operation" on
pages 92 and 93.
Figure 66. Usual operation
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
90