[Marco Study notes] The production of Linux system bootable Linux with network function

Knowledge Base:

System Boot Process: Post-->bios (Boot sequence)-->grub (Bootloder (in Stage1:mbr;stage2:grub directory))-->kernel (INITRD)-- SHELL

Production steps:

1. Partition the target disk

Two:

Host:/DEV/SDB1/DEV/SDB2

Mount the/DEV/SDB1 to/mnt/boot,/dev/sdb2 mount to/mnt/sysroot

Mount/dev/sdb1/mnt/bootmount/dev/sdb2/mnt/sysroot

2. Install GRUB to target disk

Grub-install--root-directory=/mnt/dev/sdb

3. Copy kernel and INITRD files

1 CP /boot/vmlinuz-2.6. -279. el6.i686/mnt/boot/vmlinuz2cp /boot/initramfs-2.6. -279. el6.i686.img/mnt/boot/initramfs.img

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4. Create the root system file of the target file

Mkdir-pv/mnt/sysroot/{/etc/rc.d,usr,var,media,home,root,src,sys,boot,tmp,lib,lib64,dev,proc,bin,sbin}

Porting Bash,ls to target root system files with BINCP scripts

Bincp.sh as follows:

1#!/bin/Bash2 #3dest=/mnt/Sysroot4 libcp () {5libpath=${1%/*}6 [!-D $DEST $libpath] && mkdir-p $DEST $libpath7 [!-e $DEST ${1}] && cp $DEST $libpath && echo "Copy lib $ finished"8 }9 BINCP () {Ten cmdpath=${1%/*} One [!-D $DEST $cmdpath] && mkdir-p $DEST $cmdpath A [!-e $DEST ${1}] && cp $DEST $cmdpath -    - For LIB in ' LDD $ | grep-o "/.*lib\ (64\) \{0,1\}/[^[:space:]]\{1,\}" ';d o the libcp $LIB -  Done - } - read-p "Your Command:" CMD + until [$CMD = = ' Q ']; do - ! which $CMD &>/dev/null && echo "wrong command" && read-p "Input again:" CMD && Continue + command= ' which $CMD | grep-v "^alias" | grep-o "[^[:space:]]\{1,\}" A BINCP $COMMAND at echo "Copy $COMMAND finished." - read-p "continues:" CMD -  Done

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5. Writing/mnt/sysroot/sbin/init files

1#!/bin/Bash2 #3 Echo-E"Welcome to \033[34m My tiny\033[0m Linux"4 Mount-N-T proc proc/proc5 Mount-n-t SYSFS SYSFS/SYS6 Insmod/lib/modules/E1000.ko7[$?-eq0] &&Echo-E"Load e1000 modules succeed [\033[32mok\033[0m]"8Ifocnfig Lo127.0.0.1/89 ifconfigEth0192.168.0.225/ -Ten Mount-n-o remount,rw/dev/sda2/ One/bin/bash

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6. Provide configuration files for grub

1 default=02 timeout=53title Test Linux4     Root (hd0,0)5     kernel/vmlinuz ro root=/dev/sda2 selinux=0 init=/ sbin/init6     initrd/initramfs.img

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In this connection, a Linux with network function is finished.

[Marco Study notes] The production of Linux system bootable Linux with network function