BIOS Guard creates a protected, write-protected region within the SPI flash chip (where the BIOS resides). This region contains critical data such as the . Its official purpose is security: preventing rootkits, malware, or unauthorized software from corrupting the core boot code.
Introduction: What is BIOS Guard? Modern motherboards, particularly those from major OEMs like Dell, Lenovo, HP, and Acer, utilize a technology developed by AMI (American Megatrends International) called BIOS Guard . This is not a feature you see in the BIOS setup menu; instead, it operates at the hardware/firmware level.