6
DriveLock hard drive protection
A hard drive protected with a DriveLock password stays protected, even if the drive is removed from one system and
inserted into another. At power-on, the system prompts the user for the DriveLock password. If an incorrect password is
entered, the information on the hard drive is inaccessible.
The DriveLock password is stored inside the hard drive itself and cannot be read; it can only be authenticated against.
Therefore, an unauthorized user cannot obtain the DriveLock password from the hard drive itself.
To enable DriveLock:
1. Boot the system.
2. Press f10 to enter the BIOS setup.
3. Select DriveLock Passwords from the Security menu, and then select Enable.
4. Follow the system prompts to create a DriveLock password.
NOTE: If the user forgets the DriveLock password, the drive cannot be recovered.
Default settings for DriveLock and Automatic DriveLock
Two types of DriveLock protection are available: DriveLock and Automatic DriveLock. The BIOS settings for DriveLock
protection are disabled by default. DriveLock and Automatic DriveLock settings are mutually exclusive, so only one of
the options can be enabled.
Automatic DriveLock
When Automatic DriveLock is enabled, the BIOS automatically generates a user DriveLock password, and the BIOS
administrator password is used as the master DriveLock password. After the BIOS successfully authenticates the user
during preboot authentication, the BIOS unlocks the drive.
If the user fails to authenticate, the BIOS displays a warning message that prompts for the BIOS administrator password.
If the correct BIOS administrator password is entered, the BIOS unlocks the drive and the user can boot and access the
drive; otherwise, the system locks the drive and displays a non−system disk error.
HP Disk Sanitizer and Secure Erase
Disk Sanitizer removes or destroys data on the notebook primary hard drive using a data removal algorithm that is
documented in the Department of Defense (DOD) 5220.22-M specification.
Overwrite-based tools like Disk Sanitizer are effective for only hard disk drives. Therefore, the Disk Sanitizer option does
not display in menus for solid-state drives (SSDs). Secure Erase works on solid-state drives and hard disk drives that
support it. (As mentioned earlier, HP added Secure Erase to the standard BIOS in Q3 2011, and systems sold in 2009 or
later can upgrade their BIOS to include the capability.)
How does Disk Sanitizer work?
Disk Sanitizer eliminates data without damaging the hard drive. Disk Sanitizer writes multiple patterns on every sector,
cluster, byte, and bit of the hard drive (Table 1). The user can configure the number of Disk Sanitizer cycles. After Disk
Sanitizer is run, even advanced tools and techniques, such as Forensic Recovery of Evidence Device or DriveSpy, cannot
easily recover the data.
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