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Anti-Virus Protection
Common Options : Enabled, Disabled, ChipAway
Details
The Anti-Virus Protection feature is actually an enhanced version of the Virus Warning feature. Besides the standard boot sector or partition table protection, this BIOS feature also offers more comprehensive anti-virus protection via built-in rule-based anti-virus code like ChipAway.
When you enable this feature, the BIOS will halt the system and flash a warning message whenever there's an attempt to write to the boot sector or the partition table. Note that this only protects the boot sector and the partition table, not the entire hard disk.
This feature can cause problems with software that need to access the boot sector. One good example is the installation routine of all versions of Microsoft Windows from Windows 95 onwards. When enabled, this feature causes the installation routine to fail. Also, many disk diagnostic utilities that access the boot sector can also trigger the system halt and error message as well. Therefore, you should disable this feature before running such software.
Alternatively, you can select the internal rule-based anti-virus code. The software used in the reference motherboard is called ChipAway. Enabling ChipAway provides better anti-virus protection by scanning for and detecting boot viruses before they have a chance to infect the boot sector of any hard disk.
Note that this feature is useless for hard disks that run on external controllers with their own BIOS. Boot sector viruses will bypass the system BIOS with its anti-virus protection features and write directly to the hard disks. Such controllers include additional IDE or SCSI controllers that are either built into the motherboard or available via add-on cards.
