Hitachi C4K60 Specifications - Page 93

The SECURITY ERASE UNIT command erases all user data. The SECURITY ERASE PREPARE command shall be completed immediately prior to the SECURITY ERASE UNIT command. If the device receives a SECURITY ERASE UNIT command without an immediately prior SECURITY ERASE PREPARE command, the device aborts the SECURITY ERASE UNIT command This command disables the device lock function, however, the master password is still stored internally within the device and may be reactivated later when a new user password is set. The device returns Aborted command error if the device is in Frozen mode. The execution time of this command is shown below. - HTC426030G7CE00 - HTC426020G7CE10 27 minutes 20 minutes 7.5.31. Security Freeze Lock [F5h] Task File Registers Command LBA High LBA Mid LBA Low Device/Head Sector Count Features 7 6 5 4 3 2 1 0 F5h XX XX XX X X X DRV X X X X XX XX The SECURITY FREEZE LOCK command sets the device to frozen mode. After this command is completed any other commands which update the device lock functions are rejected. Frozen mode is quit by power-off or hardware reset. If Security Freeze Lock is issued when the device is in frozen mode, the command executes and the device remains in frozen mode. The device returns Aborted command if the device is in Locked Mode. Commands disabled by Security Freeze Lock are: − SECURITY SET PASSWORD command − SECUIRTY UNLOCK command − SECURITY DISABLE PASSWORD command − SECURITY ERASE UNIT command K6610170 Rev.2 Dec 22, 2004 - 93 -