[root@nmshuishui ~]# mount /dev/sdb1 /mnt/boot
mount: mount point /mnt/boot does not exist
[root@nmshuishui ~]# mkdir -p /mnt/boot /mnt/sysroot
[root@nmshuishui ~]# mount /dev/sdb1 /mnt/boot
[root@nmshuishui ~]# mount /dev/sdb2 /mnt/sysroot/
[root@nmshuishui ~]#
[root@nmshuishui ~]# grub-install --root-directory=/mnt /dev/sdb
Probing devices to guess BIOS drives. This may take a long time.
Installation finished. No error reported.
This is the contents of the device map /mnt/boot/grub/device.map.
Check if this is correct or not. If any of the lines is incorrect,
fix it and re-run the script `grub-install'.
(fd0) /dev/fd0
(hd0) /dev/sda
(hd1) /dev/sdb
[root@nmshuishui ~]# cd /mnt/boot/
[root@nmshuishui boot]# ls
grub lost+found
[root@nmshuishui boot]# cd grub/
[root@nmshuishui grub]# ls
device.map e2fs_stage1_5 fat_stage1_5 ffs_stage1_5 iso9660_stage1_5 jfs_stage1_5 minix_stage1_5 reiserfs_stage1_5 stage1 stage2 ufs2_stage1_5 vstafs_stage1_5 xfs_stage1_5
[root@nmshuishui grub]#
[root@nmshuishui sysroot]# mkdir -pv /mnt/sysroot/{etc/rc.d,usr,var,proc,sys,dev,lib,lib64,bin,sbin,boot,srv,mnt,media,home,root}
mkdir: created directory `/mnt/sysroot/etc'
mkdir: created directory `/mnt/sysroot/etc/rc.d'
mkdir: created directory `/mnt/sysroot/usr'
mkdir: created directory `/mnt/sysroot/var'
mkdir: created directory `/mnt/sysroot/proc'
mkdir: created directory `/mnt/sysroot/sys'
mkdir: created directory `/mnt/sysroot/dev'
mkdir: created directory `/mnt/sysroot/lib'
mkdir: created directory `/mnt/sysroot/lib64'
mkdir: created directory `/mnt/sysroot/bin'
mkdir: created directory `/mnt/sysroot/sbin'
mkdir: created directory `/mnt/sysroot/boot'
mkdir: created directory `/mnt/sysroot/srv'
mkdir: created directory `/mnt/sysroot/mnt'
mkdir: created directory `/mnt/sysroot/media'
mkdir: created directory `/mnt/sysroot/home'
mkdir: created directory `/mnt/sysroot/root'
[root@nmshuishui sysroot]# ls
bin boot dev etc home lib lib64 lost+found media mnt proc root sbin srv sys usr var
[root@nmshuishui sysroot]#
②移植bash命令和其库文件到根文件系统
[root@nmshuishui mnt]# sh ~/scripts/cporder.sh
Enter a command: bash
Enter a command: shutdown
Enter a command: reboot
Enter a command: vim
Enter a command: touch
Enter a command: mkdir
Enter a command: rm
Enter a command: ls
Enter a command: cat
Enter a command: less
Enter a command: ifconfig
Enter a command: ip
Enter a command: route
Enter a command: quit
quit
[root@nmshuishui mnt]# sync
[root@nmshuishui mnt]# sync
[root@nmshuishui mnt]# ls
boot sysroot
[root@nmshuishui mnt]# cd sysroot/
[root@nmshuishui sysroot]# ls
bin lib64 sbin usr
[root@nmshuishui sysroot]# cd bin/
[root@nmshuishui bin]# ls
bash cat ls mkdir rm touch
[root@nmshuishui bin]# ln -sv bash sh
`sh' -> `bash'
[root@nmshuishui bin]# sync
[root@nmshuishui bin]#
附：命令移植脚本
#!/bin/bash
#
target=/mnt/sysroot
clearCmd() {
if which $cmd &> /dev/null; then
cmdPath=`which --skip-alias $cmd`
else
echo "No such command"
return 5
fi
}
cmdCopy() {
cmdDir=`dirname $1`
[ -d ${target}${cmdDir} ] || mkdir -p ${target}${cmdDir}
[ -f ${target}${1} ] || cp $1 ${target}${cmdDir}
}
libCopy() {
for lib in `ldd $1 | grep -o "/[^[:space:]]\{1,\}"`; do
libDir=`dirname $lib`
[ -d ${target}${libDir} ] || mkdir -p ${target}${libDir}
[ -f ${target}${lib} ] || cp $lib ${target}${libDir}
done
}
while true; do
read -p "Enter a command: " cmd
if [ "$cmd" == 'quit' ] ;then
echo "quit"
exit 0
fi
clearCmd $cmd
[ $? -eq 5 ] && continue
cmdCopy $cmdPath
libCopy $cmdPath
done
[root@nmshuishui ~]# cd /mnt/sysroot/sbin/
[root@nmshuishui sbin]# vim init
#!/bin/bash
#print Welcome info
echo -e "Welcome to \033[34m nmshuishui soft-linux\033[0m"
#mount wei wenjian system when the system is running.
mount -n -t proc proc /proc
mount -n -t sysfs sysfs /sys
#mount ethernet driver autl when the system is start.
insmod /lib64/modules/e1000.ko
[ $? -eq 0 ] && echo -e "Load e1000 module succeeded [\033[32m0K\033[0m]"
ifconfig lo 172.0.0.1/8
ifconfig eth0 172.16.251.235/16
#mount the /dev/sda2 to make it can be write and read.
mount -n -o remount,rw /dev/sda2 /
#run /bin/bash
/bin/bash
