Chapter 8 System BIOS
Table 8-3. Setup Utility Functions Continued
Heading | Option | Description |
Security | Device Security | Enables/disables serial, parallel, and USB ports, |
(continued) |
| system audio, and network controller. |
|
|
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| Network Service Boot | Enables/disables the computer’s ability to boot from |
|
| an operating system installed on a network server. |
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| (Feature available on NIC models only; the network |
|
| controller must reside on the PCI bus or be |
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| embedded on the system board.) |
| System IDs | Allows user to set: |
|
| Asset tag |
|
| |
|
| Refer to the Desktop Management guide for |
|
| more information |
|
| Keyboard locale setting (e.g., English or |
|
| German) for System ID entry. |
| DriveLock (Select models | Allows user to assign or modify a master or user |
| only. Appears only when at | password for select IDE hard drives. Whe enabled, |
| least one drive that supports | user is prompted to enter a password, which is |
| DriveLock is attached) | necessary for accessing the hard drive. |
| Master Boot Record Security | Allows user to enable or disable Master Boot |
|
| Record (MBR) Security. When enabled, the BIOS |
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| rejects all requests to write to the MBR on the |
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| current bootable disk. Each time the computer is |
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| powered on or rebooted, the BIOS compares the |
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| MBR of the current bootable disk to the previously- |
|
| saved MBR. If changes are detected, you are given |
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| the option of saving the MBR on the current |
|
| bootable disk, restoring the |
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| or disabling MBR Security. You must know the |
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| setup password, if one is set. |
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| Note: Disable MBR Security before intentionally |
|
| changing the formatting or partitioning of the |
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| current bootable disk. Several disk utilities (such as |
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| FDISK and FORMAT) attempt to update the MBR. |
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| 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 |
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| errors. If MBR Security is enabled and disk |
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| accesses are being serviced by the operating |
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| system, any MBR change will be detected by the |
|
| BIOS during the next reboot, and an MBR Security |
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| warning message will be displayed. |
| Save Master Boot Record | Saves a backup copy of the Master Boot Record of |
|
| the current bootable disk. |
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| Note: Only appears if MBR Security is enabled. |
| Restore Master Boot Record | Restores the backup Master Boot Record to the |
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| current bootable disk. |
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| Note: Only appears if all of the following conditions |
|
| are true: |
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| MBR Security is enabled |
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| A backup copy of the MBR has been previously |
|
| saved |
|
| The current bootable disk is the same disk from |
|
| which the backup copy of the MBR was saved. |
|
| Continued |
Featuring the AMD Athlon XP Processor
Second Edition - April 2003