Figure 64. Usual Operation For Por - Hitachi IC25N040ATCS04-0 - Travelstar 40GN 40GB UDMA/100 4200RPM 2MB 2.5" IDE Hard Drive Specifications

11.9.5.3 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) — refers to the commands in Figure
on 90 and 91.

Figure 64. Usual operation for POR

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.
, "Command table for device lock operation"
66
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
Media Access
Command (*1)
N
Reject
: All commands are available
88
Non-media Access
Command (*1)
Complete