This is also a translated article, where is http://www.nondot.org/sabre/os/files/booting/x86bootstrapping.html worth noting: The following NetBSD may have been outdated, because probably in NetBSD When the -1.3, it has been modified to be loaded with a block-list (standing one night: http://www.douzhe.com/project/fbsd2/7.htm) Explain here: start a computer The process of loading the operating system is often called "bootstrap process" or simply called "booting".
) And separate library files (libsa), and complete settings by additional program (InstallBoot). Preface: This article will try our best to tell the partitions, startup sequences, and procedures for these management above the Intel 80x86 platform. Maybe it is possible The example begins to explain the simplest way to explain the partition and start order, and appropriately add some complicated things appropriately. We will start from a single operation system and will gradually introduce complex examples. Author The damage caused by the article does not bear any responsibility, because the author's purpose is just to provide a reference. I am trying to write a unified series of documents, read it is like your own adventure, because you can see how the computer is found Its target partition. Please tell you about this idea. I may prevent boring will continue to provide common examples in the article. Although I think I should write these in front like normal people, but here It is indeed a FAQ. At the same time, this will also lead to a very bad article structure. Procedure of the processor: The INTEL X86 series starts from the hardware RESET, initializing all Cache, Register, and Buffer set the value to The value required. Soon to real mode. EIP is set to 0000FFF0H, and the CS points to the basement fff0000h as the segment selector. Because the execution of the program is started by fffffff0h (CS: EIP) ---- 即 物 物存 (EPROM ) Top 60bytes. This EPROM is usually used by low-end addresses, but will be re-mapped to high-end addresses (such as Intel 430hx) by the system. It is worth noting that the corresponding sub-address here is Relationships are different from the corresponding relationships in the following programming. Typically, this EPROM in the PC will set up the IDT below the real mode and jump to the BIOS to execute. Single operating system, single disk: the easiest configuration is Single operating system below single disk environment, for example, you may have only one netbsd on your unique SCSI disk (do you use not SCSI? Startup step: 1.BIOS loader generates a 0x19 interrupt, This interrupt is usually loaded with the first sector of the floppy drive or the hard drive (CHS
