Security Mode Feature Set; Security Mode; Security Level; Password - Hitachi IC25N040ATCS04-0 - Travelstar 40GN 40GB UDMA/100 4200RPM 2MB 2.5" IDE Hard Drive Specifications

11.9 Security Mode Feature Set

Security Mode Feature Set is a powerful security feature. With a device lock password, a user can prevent
unauthorized access to a device even if it is removed from the computer.
New commands are supported for this feature as listed below:
Security Set Password
Security Unlock
Security Erase Prepare
Security Erase Unit
Security Freeze Lock
Security Disable Password

11.9.1 Security Mode

The following security modes are provided.
Device Locked Mode
Device Unlocked Mode
Device Frozen Mode

11.9.2 Security level

The following security levels are provided:
High level security
Maximum level security

11.9.3 Password

This function can have two types of passwords as described below.
Master Password
User Password
The system manufacturer or dealer who intends to enable the device lock function for end users must set
the master password even if only single level password protection is required. Otherwise, the 'default'
master password which is set by Hitachi can unlock a device that is locked with a user password.
('F1'h)
('F2'h)
('F3'h)
('F4'h)
('F5'h)
('F6'h)
The device disables media access commands after power on. Media access
commands are enabled by either a Security Unlock command or a Security
Erase Unit command.
The device enables all commands. If a password is not set this mode is
entered after power on, otherwise it is entered by a Security Unlock or a
Security Erase Unit command.
The device enables all commands except those which can update the device
lock function, set/change password. The device enters this mode via a
Security Freeze Lock command. It cannot quit this mode until power off.
When the device lock function is enabled and the User Password is forgotten,
the device can be unlocked via a Master Password.
When the device lock function is enabled and the User Password is forgotten,
then only the Master Password with a Security Erase Unit command can
unlock the device. Then user data is erased.
When the Master Password is set, the device does NOT enable the Device
Lock Function, and the device CANNOT be locked with the Master Password,
but the Master Password can be used for unlocking the locked device.
The User Password should be given or changed by a system user. When the
User Password is set, the device enables the Device Lock Function, and then
the device is locked on the next power on reset or hard reset.
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
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