bootstrapper

first part of the master boot record, because the bootstrapper function is more powerful and will have a driver file, 446byte Word Energy saving storage, the following will introduce its other parts. The first part of the bootloader program calls the data in a portion of the sector after 512 bytes, which includes the drive of the/boot partition, because the software and hardware connections must be driven by the translation, at which time the/boot pa

following are some of the system startup class failure scenarios:> MBR sector failureThe MBR boot record is located on the first sector (512 bytes) of the physical hard disk, which is also known as the primary boot sector (MBR sector), and contains a partition table record of the entire hard disk in addition to some of the system bootstrapper data. When the primary boot sector fails to send, it may not be possible to enter the main boot menu, or the

Directory1. Tree-like directory structure diagram2./catalogue3./etc/Catalogue4./usr/Catalogue5./var/Catalogue6./proc/Catalogue7./dev/CatalogueThis article mainly comes from the network to organize.Directory Structure Reference address:http://www.hudong.com/wiki/linux%E7%9B%AE%E5%BD%95%E7%BB%93%E6%9E%84Http://linux.ccidnet.com/art/3067/20070315/1037337_1.htmlHttp://os.51cto.com/art/200802/65783.htmhttp://www.iteye.com/topic/11251622./catalogueDirectoryDescribe/The root of the first hierarchy, the

Linux boot-up process:1. Press the power buttonSupplementary: The main hardware of computer case is: motherboard, hard disk, optical drive, CPU, memory, video card, sound card, network card2. Initializing and detecting hardware using the BIOS programBIOS basic input/output systemCMOS Semiconductor metal oxidesDetects and sets the CPU, memory, graphics card, hard disk, and various chipsFind boot media (local hard drive, optical drive I, USB flash drive, PXE chip remote boot)Load the BIOS program,

LINUX Kernel UpgradeLinux Kernel websitehttps://www.kernel.org/POST BIOS (Boot sequence) selects the boot device sequence in the MBR to see if there is a bootstrapper,----> MBR (bootloader) provides a list of cores-------> Loads the selected KERNEL,INITRD ( Memory emulated disk device requires cache), Initramfs (cache)----> get to root filesystem and mount, run InitSet the default run levelDefines the system initialization scripts that are running,Run

Linux startup processPOST BIOS (Boot sequence) selects the boot device sequence in the MBR to see if there is a bootstrapper,----> MBR (bootloader) provides a list of cores-------> Loads the selected KERNEL,INITRD ( Memory emulated disk device requires cache), Initramfs (cache)----> get to root filesystem and mount, run InitBootloadler the loading process after the start1, when the system reads bootloader, mount the kernel partition, do not recognize

boot record MBR is part of what we usually call a boot program, whether it's a Windows or Linux system, where a part of the bootstrapper is written. But this part of the boot program is just part of the boot program, take the latest version of Grub GRUB2, through the MBR boot grub2, and then grub2 boot to continue to the hard disk on the/boot/grub/directory to continue to boot, Here the cows will be on the hard drive or USB stick when installing grub

Boot's origins:The term bootstrap refers to a person who tries to stand up by pulling her own boots. (Understanding the Linux Kernel)Western proverb: Grab your shoelaces and stand up (similar to what we say: Pick up your own hair with your hands).The start of the system is like the proverb above: Start yourself up with your own boot program. Boot program in the hard disk partition, the bootstrapper must be loaded into memory to be CPUThere is a contr

This paper mainly explains the grub principle and the process of grub during system startup.Grub is the boot loader system bootstrapper used in most Linux distributions, the primary function of which is to find the system kernel kernel file and load the kernel file by grub after the computer chooses the specified device from boot sequence.Grub Execution ProcessThe grub process is mainly divided into three stages, as shown in:650) this.width=650; "src=

boot sector and gives the system control to the boot program. 2. Loading and executing the bootloader system boot program is mainly to load the system kernel into memory, the boot disk must contain the boot record on the first logical track. This 512-byte sector is also referred to as the boot sector, and the BIOS reads the boot sector into memory from the boot disk after the system completes the power-on self-test. The boot record contains parameters for some of the physical properties of the

Project Description:This is a project that simulates a company's unattended batch installation server, which is built on the serverDHCP,TFTP,NFSand other services, usingKickstartConfiguration of files automatic installation script for automatic configurationDNS, assigning information such as host names. Client fromDHCPavailable on the serverIPto download the bootstrapper from the serverpxelinux.0and aVmlinuzkernel, mirroring and fromKickstartConfigur

and kernel boot files;xinetd : Super daemon, used to wake up TFTP Service ;HTTP : Hypertext Transfer Protocol , Hypertext Transfer Protocol, providing the client with Kickstart documentation and installation sources;Kickstart : System automation installation script;Syslinux : provide pxelinux.0 file for boot boot, equivalent to bootloader ;Install the boot file: On the system installation CD;Operating system CD or Image: Installation source;2 , implementation process:pxe adopt C/s Service Sche

To start the bootstrapper configuration fileLilo/etc/lilo.confGrub/boot/grub/menu.lst system startup file Core script Master launch control file /etc/inittab SysV the location of the startup script/etc/init.d,/ETC/RC.D/INIT.D, or /etc/rc.d SysV the location of the startup script link/etc/ INIT.D/RC.D,/ETC/RC.D/RC.D, or /ETC/RC.D Local startup script/etc/rc.d/rc.local,/etc/ Files in init.d/boot.local or/etc/rc.boot network configurati

1. Operating system and KernelOperating systems are those parts of the entire system that are responsible for the most basic functions and systems management. Includes kernels, device drivers, boot bootstrapper, command-line shell, or other kinds of user interfaces, basic file management tools, and system tools.The user interface is the external manifestation of the operating system, and the kernel is the built-in core.Applications running in the syst

tools for libraries, Toolsets, and systems. 3. Introduction to operating system and kernel The operating system is the part of the entire system that is responsible for the most basic functions and systems management. Includes kernels, device drivers, boot bootstrapper, command-line Shell , or other kinds of user interfaces, basic file management tools, and system tools. The kernel is the core of the operating system. Typically, a

/etc/default/tftpd-hpaMake the following changes:Tftp_username= "TFTP"tftp_directory= "/var/lib/tftpboot"Tftp_address= "[: 0.0.0.0:]:69"Tftp_options= "--secure"run_daemon= "Yes"options= "-l-s/var/lib/tftpboot"Save the file and exit.3. Use xinetd to start the boot service automatically every time the system is powered on, and start the TFTPD service.sudo update-inetd--enable BOOTsudo service tftpd-hpa start4, check the status.sudo netstat-luIt will be as follows:Proto recv-q send-q Local address

Start process Diagram650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/5D/23/wKiom1UiBnGijFTzAACWX8oH45Q798.jpg "title=" Start diagram. png "alt=" wkiom1uibngijftzaacwx8oh45q798.jpg "/>1. BIOSA. post power-on self-test, test computer hardware B. Initialize, assign interrupt number, external device initialization and detectionC. Read the CMOS information and load the boot drive's bootloader program according to the boot order . Handover work to bootloader 2. MBRInterpretation: a narrow

transfer traffic between the two ports, which is a network traffic redirection#使用dd结合nc命令网络克隆磁盘分区主机: DD if gzip 50522 192.168. 215.63 50522 gzip DD OF=/DEV/SDA#dd命令克隆/dev/vda disk, and use gzip compression, redirect the data stream to the native 50522 port, to restore the machine using NC connection host 50522 port, you can receive the host 50522 port of the bit data stream, then use gzip decompression, and revert to/dev/ SDA disk#dd命令读取的是磁盘扇区, so regardless of disk file system, or partition t

/rc3.d/s99local.3. Execute user-defined bootstrapper/etc/rc.d/rc.local. in fact, when executing/etc/rc.d/rc3.d/s99local, it is executing/etc/rc.d/rc.local. S99local is a symbolic link that points to rc.local. In general, the custom program does not need to perform the above mentioned cumbersome to build the shell to increase the link file step, only need to put the command in rc.local, the shell script is reserved for the user to customize the boot co

For the IOC, unity see Bo Friends article click here.Words do not say much, on the procedure hellounity, the procedure uses vs2010,unity2.1.1. The program framework is as follows2. Class library hellounity.objects, primarily entity classes, are used to create.3. Class Library HELLOUNITY.IOC, including parser production plant, parser Interface, Static Class Iochelper for us to create an object instance. 4. Class library hellounity.unity, mainly including UnityDependencyResolver.cs, resolves class