huayuliang wrote:
thanks!!
But I can't understand why need type USER password during use the "fasterase".
why? I think its function is erase all data of HDD, the "erase" didn't need password. and my HDD hasn't be set any password.
ATA set the standard and it sets the procedures, when you know them
you will understand them.
You must find some IBM data sheets :
Here is an example :
Code:
User Password Lost ??
LEVEL ? High
DO : Unlock CMD with Master Password
RESULT : Normal operation
LEVEL ? Maximum
DO : Erase Prepare Command
DO : Erase Unit Command with Master Password
RESULT : Normal operation but data lost
Here is from a typical IBM datasheet :
Code:
If the User Password is forgotten and High level security is set,
the system user cannot 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 [b]with the Master Password.[/b]