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Table 3-4 Computer Setup—Security (continued)
Slot Security Allows you to disable any PCI or PCI Express slot. Default is enabled.
Network Service Boot Enables/disables the computer’s ability to boot from an operating system installed on a network
server. (Feature available on NIC models only; the network controller must be either a PCI
expansion card or embedded on the system board.) Default is enabled.
System IDs Allows you to set:
● Asset tag (18-byte identifier), a property identification number assigned by the company to
the computer.
●
Ownership tag (80-byte identifier) displayed during POST.
●
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 System ID entry.
Master Boot Record
Security
Allows you to enable or disable the Master Boot Record (MBR) security. Default is disabled.
The MBR contains information needed to successfully boot from a disk and to access the data
stored on the disk. Master Boot Record Security may prevent unintentional or malicious changes
to the MBR, such as those caused by some viruses or by the incorrect use of certain disk utilities.
It also allows you to recover the "last known good" MBR, should changes to the MBR be detected
when the system is restarted.
When MBR Security is enabled, the BIOS prevents any changes being made to the MBR of the
current bootable disk while in MS-DOS or Windows Safe Mode.
●
Save Master Boot Record – This option will appear if Master Boot Record Security is
enabled. It allows you to save a copy of the Master Boot Record into non-volatile storage.
●
Restore Master Boot Record – This option will appear on the next boot once the Master Boot
Record has been saved. It allows you to restore the saved copy back to the hard drive’s
Master Boot Record.
NOTE: Most operating systems control access to the MBR of the current bootable disk; the
BIOS cannot prevent changes that may occur while the operating system is running.
16 Chapter 3 Computer Setup (F10) Utility