Booting and x86

This lecture covers the process of booting a computer, starting from the power-on sequence to the handover to the operating system kernel. It explains the role of BIOS, the x86 architecture, memory referencing, I/O communication, and ATA commands. The lecture delves into topics such as the x86 registers, memory-mapped I/O, and the segmentation model in x86. It also discusses the implementation details of SeaBIOS, memory aliasing, and the physical memory layout. The lecture concludes with a review of the xv6 bootloader code and references to further resources.