Ø在 x86 系统中，将 1M 空间最上面的 0xF0000 到 0xFFFFF 这 64K 映射给 ROM。 Ø当电脑刚加电的时候，会做一些重置的工作，将 CS 设置为 0xFFFF，将 IP 设置为 0x0000，所以第一条指令就会指向 0xFFFF0，正是在 ROM 的范围内。 Ø在这里，有一个 JMP 命令会跳到 ROM 中做初始化 ...

Unless your computer is pretty old, it probably uses UEFI (Unified Extensible Firmware Interface) to boot. The idea is that a bootloader picks up files from an EFI partition and uses them to start ...

My UEFI experience so far has been limited to only two laptop OEMs, HP/Compaq and Acer. I found the former to be relatively difficult to work with (see the recent Compaq and earlier HP Pavilion posts) ...

It has been some time since I have written about installing Linux on systems with UEFI firmware, and I have recently gotten several questions about how to do this. So I think this is a good time for a ...

UPDATE (December 2 nd, 2024): The bootkit described in this report seems to be part of a project created by cybersecurity students participating in Korea's Best of the Best (BoB) training program. As ...

今年早些时候 Linux 中的 UEFI 代码已经进行过清理，随后一系列 RISC-V UEFI 支持的早期补丁被提出，形成了更为全面的补丁集，用于在 Linux 下启用 RISC-V 的 UEFI 支持。近日则又有开发者提交了一系列补丁，解决了大量问题的同时为 Linux 下支持 RISC-V UEFI 新增了一些新 ...

With the increasing prevalence of open-source implementations and the expansion of personal computing device usage to include mobile and non-PC devices as well as traditional desktops and laptops, ...

UPDATE: November 28, 3:20 PM California time. The headline of this post has been changed. This update is adding the following further details: this threat is not a UEFI firmware implant or rootkit, it ...