Compaq dc7100 HP Compaq dc71xx and dx61xx Series Business Desktop Computers Te - Page 159

BIOS ROM Table 8-3 Setup Utility Heading Option Description DriveLock Security Allows you to assign or modify a master or user password for MultiBay 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 MultiBay drive that supports the DriveLock feature is attached to the system. See the Desktop Management Guide on the Documentation CD for more information. Data Execution Prevention Enable/Disable. Data Execution Prevention Mode help prevent OS security breaches. ✎ This selection is in effect only if the processor and operating system being used comprehend and utilize the function. Security (continued) Master Boot Record Security* 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. Save Master Boot Saves a backup copy of the Master Boot Record of the current Record* bootable disk. ✎ Only appears if MBR Security is enabled. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Technical Reference Guide 361834-002 8-11