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Message: <blockquote data-quote="Megatrone" data-source="post: 5240783" data-attributes="member: 183526">Check this" A consequence of manufacturers efforts to make BIOS flashing easier is that fewer motherboards are equipped with a Flash BIOS jumper. While this is understandable - it somewhat defeats the object of having a Windows-based flash application if users have delve into the innards of their PC before they can use it - it does have security implications. The benefits of being able to write-protect your flash BIOS was amply illustrated by the emergence of the CIH virus in the late 1990s. CIH was the first virus to attack a PC's BIOS ...... flashable BIOS that is ....... or to be more precise, non write-protected flashable BIOS! The most common variant of the CIH virus overwrote both the first 2048 sectors of a hard disk as well as the BIOS, making it impossible to reboot a system in order to reflash the BIOS! Motherboard manufacturer Gigabyte perhaps pointed the way ahead with the announcement of it's DualBIOS technology in early 1999. Motherboards with this technology have two physical BIOS chips, so that in the event of the failure of the "primary" chip - whether as a result of a failed flashing, virus attack or some other catastrophic problem - a "secondary" BIOS chip automatically takes over on your next system boot.  Expect other motherboard manufacturers to follow suit if, as appears likely, we are now in an age when users are going to be updating their BIOS as often as they do any other item of driver software. "</blockquote>

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