HP Compaq dx6050 MT Reference Manual page 20

Setup Utilities and Diagnostics Features
Heading Option
Security DriveLock*
(continued)
System IDs
Master Boot
Record Security*
Save Master Boot
Record*
*Option supported on select models.
2–8
Allows you to assign or modify a master or user password for
select MultiBay IDE hard drives (not supported on SCSI hard
drives). When this feature is enabled, the user is prompted to
provide one of the DriveLock passwords during POST. If neither
is successfully entered, the hard drive will remain inaccessible
until one of the passwords is successfully provided during a
subsequent cold-boot sequence.
This selection will only appear when at least one
drive that supports the DriveLock feature is attached to the
system.
See the Desktop Management Guide for more information.
Allows you to set:
• Asset tag (18-byte identifier) and ownership Tag (80-byte
identifier displayed during POST).
See Chapter 3, Desktop Management, in this Guide.
• Chassis serial number or Universal Unique Identifier (UUID)
number. The UUID can only be updated if the current
chassis serial number is invalid. (These ID numbers are
normally set in the factory and are used to uniquely identify
the system.)
Keyboard locale setting (for example, English or German) for
System ID entry.
Allows you to enable or disable Master Boot Record (MBR)
Security.
When enabled, the BIOS rejects all requests to write to the
MBR on the current bootable disk. Each time the computer is
powered on or rebooted, the BIOS compares the MBR of the
bootable disk to the previously saved MBR. If changes are
detected, you are given the option of saving the MBR on the
current bootable disk, restoring the previously-saved MBR, or
disabling MBR security. You must know the setup password if
one is set.
Disable MBR Security before intentionally changing the
formatting or partitioning of the current bootable disk.
Several disk utilities (such as FDISK and FORMAT) attempt to
update the MBR.
If MBR Security is enabled and disk accesses are being
serviced by the BIOS, write requests to the MBR are rejected,
causing the utilities to report errors.
If MBR Security is enabled and disk accesses are being
serviced by the operating system, any MBR change will be
detected by the BIOS during the next reboot, and an MBR
Security warning message will be displayed.
Saves a backup copy of the Master Boot Record of the current
bootable disk.
Only appears if MBR Security is enabled.
319865-007
Description
Service Reference Guide, d300
MultiBay