13.8.4.4 User Password Lost
If the User Password is forgotten and High level security is set, the system user can not access any data.
However the device can be unlocked using the Master Password.
If a system user forgets the User Password and Maximum security level is set, data access is impossible.
However the device can be unlocked using the Security Erase Unit command to unlock the device and
erase all user data with the Master Password.
Figure 72. Password Lost
13.8.4.5 Attempt limit for SECURITY UNLOCK command
The SECURITY UNLOCK command has an attempt limit. The purpose of this attempt limit is to prevent
someone from attempting to unlock the drive by using various passwords multiple times.
The device counts the password mismatch. If the password does not match, the device counts it without
distinguishing the Master password and the User password. If the count reaches 5, EXPIRE bit (bit 4) of
Word 128 in Identify Device information is set and the SECURITY ERASE UNIT command and the
SECURITY UNLOCK command are then aborted until a hard reset or a power off. The count and
EXPIRE bit are cleared after a power-on reset or a hard reset.
Deskstar 60 GXP Hard disk drive specification
86
User Pasword Lost
LEVEL ? Hi
h
Unlock CMD with Master Password
Normal operation
Maximum
Erase Prepare Command
Erase Unit Command
with Master Password
Normal operation but data lost
DERA003.prz
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