HP RP7 Model 7800 Maintenance And Service Manual page 25

Table 3-4 Computer Setup—Security (continued)
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Slot Security Allows you to disable any the PCI Express x1 slot. Default is enabled.
Network 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:
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●
●
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Master Boot Record Enables/disables Master Boot Record Security. Default is disabled.
Security
The Master Boot Record (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.
NOTE:
BIOS cannot prevent changes that may occur while the operating system is running.
Each time the workstation is turned on or restarted, the BIOS compares the MBR of the current
bootable disk to the previously saved MBR. If changes are detected and if the current bootable
disk is the same disk from which the MBR was previously saved, a POST error message is
displayed.
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4 Stack/USB Port 3
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4 Stack/USB Port 4
Accessory USB Ports
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Red/24V Power USB Port
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Green/12V Power USB Port
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.
Most operating systems control access to the MBR of the current bootable disk; the
Computer Setup (F10) Utilities 15