How to set permissions for a notebook password

Because of the particularity of the use of notebook computers, so users generally need to set some use the right to operate the password, notebook computer in the end to provide what can be set the password, these passwords are what they have the right, for the notebook password set permissions issues, the author did the following answer.

　　First, the general notebook computer at the hardware level, in the BIOS has the following three passwords:

1, Supervisor Password (Super User password or supervision password)

2. User Password (password)

3, HDD user Password (hard disk users password)

The operation rights control of the software, the operation mode of the related operating system is exactly the same

　Second, the password setting:

1. If both Supervisor Password and user Password are set up, you can use either of the two to enter the BIOS or system. If you enter the BIOS with User password, the supervisor password and HDD User password become unavailable, and if you enter the BIOS with supervisor password, you can set up three. Because the supervisor Password permissions are higher than the user Password.

2, if only set the user Password and HDD user Password, you must first enter the BIOS with the user Password, clear the user Password, save the exit, and then enter the BIOS to modify the HDD user Password.

3, the general notebook, if the provision of HDD User password settings, in fact, is only used to encrypt the hard disk itself, and BIOS settings are not very related.

　Third, forget the password how to do?

Supervisor Password and User Password if forgotten, you can use the software to refresh the BIOS, assembly, hardware, such as the removal of the BIOS and other ways to remove the password; but if you forget the HDD User Password, then basically sentenced to death, only to replace the hard drive a way.