Figure 12 Usual Operation - Western Digital Ultrastar DC HC310 Specifications

9.6.4.3 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
Figure 12 Usual Operation
POR
Device Locked mode
Erase Prepare
Erase Unit
Password N
Match ?
Y
Complete
Erase Unit
Lock function
Disable
Normal operation : All commands are available
Freeze Lock command
Enter Device Frozen mode
Normal Operation except Set Password,
Disable Password, Erase Unit, Unlock commands.
Western Digital Hard Disk Drive OEM Specification
Media access
command (*1)
Reject
(*1) Refer to 9.6.5 on the page.52
50
Non-Media access
command (*1)
Complete