Hitachi Deskstar 7K500 Specifications page 29

3.8.4.3 Operation from POR after user password is set
When Device Lock Function is enabled, the device rejects media access command until a Security Unlock command
is successfully completed.
Unlock CMD
Password
Match ?
N
Y
Enter Device
Unlock mode
(*1) — refer to the commands in Figure 10.8.5, "Command table" on page 90.
POR
Device Locked mode
Erase Prepare
Erase Unit
Password
Match ?
Y
Complete
Erase Unit
Lock function
Disable
Normal operation
Freeze Lock command
Enter Device Frozen mode
Normal Operation expect Set Password,
Disable Password, Erase Unit, Unlock commands.
Deskstar 7K500 Hard Disk Drive Serial ATA Addendum
Media Access
Command (*1)
N
Reject
: All commands are available
18
Non-media Access
Command (*1)
Complete