如何定制支持用户自定义boot参数的基于debian os的live cd

Step 1 – Installing the necessary software

apt-get install xorriso live-build syslinux squashfs-tools

Step 2 – Create a basic filesystem

mkdir ~/livework && cd ~/livework

debootstrap --arch=amd64 wheezy chroot http://ftp.debian.org/debian/
or debootstrap --arch=amd64 jessie chroot http://ftp.cn.debian.org/debian/
Step 3 – Chroot

cd ~/livework && chroot chroot

mount none -t proc /proc

mount none -t sysfs /sys

mount none -t devpts /dev/pts

export HOME=/root

export LC_ALL=C

export PS1="\e[01;31m(live):\W \$ \e[00m"

apt-get install dialog dbus

dbus-uuidgen > /var/lib/dbus/machine-id

apt-get install linux-image-amd64

apt-get install live-boot parted efibootmgr ssh expect ctorrent dosfstools

modify hostname and autologin(/etc/inittab) /etc/rc.local and add live-run script in /usr/sbin(chmod 755)

passwd

apt-get clean

rm /var/lib/dbus/machine-id && rm -rf /tmp/*

kill dbus process

umount /proc /sys /dev/pts

exit

Step 4 – ISOLINUX

cd ~/livework

mkdir -p binary/live && mkdir -p binary/isolinux

or mkdir -pv binary/{live,isolinux}

cp chroot/boot/vmlinuz-3.16.0-4-amd64 binary/live/hyperman-clone-livecd.vmlinuz

cp chroot/boot/initrd.img-3.16.0-4-amd64 binary/live/hyperman-clone-livecd.initrd

mksquashfs chroot binary/live/hyperman-clone-livecd.squashfs -comp xz -e boot

cp /usr/lib/syslinux/isolinux.bin binary/isolinux/.

cp /usr/lib/syslinux/menu.c32 binary/isolinux/.

vi binary/isolinux/isolinux.cfg

ui menu.c32

prompt 0

menu title Boot Menu

timeout 300

label live-amd64

menu label ^Live (amd64)

menu default

linux /live/vmlinuz

append initrd=/live/initrd boot=live persistence quiet

label live-amd64-failsafe

menu label ^Live (amd64 failsafe)

linux /live/vmlinuz

append initrd=/live/initrd boot=live persistence config memtest noapic noapm nodma nomce nolapic nomodeset nosmp nosplash vga=normal

endtext

Step 5 – Building the iso image

cd ~/livework

xorriso -as mkisofs -r -J -joliet-long -l -cache-inodes \

-isohybrid-mbr /usr/lib/syslinux/isohdpfx.bin -partition_offset 16 \

-A "Debian Live" -b isolinux/isolinux.bin -c \

isolinux/boot.cat -no-emul-boot -boot-load-size 4 \

-boot-info-table -o remaster.iso binary

live-run script:

#!/bin/bash

live_param_file="/proc/cmdline"

live_param_list="$(grep -Ewo "live_run[[:digit:]]*" $live_param_file | uniq | sort -V)"

live_param_list="$(echo $live_param_list)"

if [ -z "$live_param_list" ]; then

exit 1

else

echo "Found live_run* parameter in boot parameters and the order to run: $live_param_list" >> /var/log/syslog

mod_live_param_file="$(mktemp /tmp/mod_live_command.XXXXXX)"

fi

for live_param in $live_param_list; do

if LC_ALL=C grep -Eq "($live_param=\"|$live_param=\\\\\")" $live_param_file; then

# For case like live_run="sleep 5" or live_run=\"sleep 5\"

LC_ALL=C grep -oE -- "$live_param=(\"|\\\\\")[^\"]*(\"|\\\\\")([[:space:]]|$)+" $live_param_file | sed -r -e "s|=\\\\\"|=\"|g" -e "s@\\\\\"([[:space:]]|$)+@\"@g" | sed -r -e 's|^\"(.*)=|\1=\"|g' >> $mod_live_param_file

elif LC_ALL=C grep -Eq "\"$live_param=" $live_param_file; then

# For case live: "live_run=sleep 5", "live_run1=mount UUID=XXXYYZZ /mnt"

LC_ALL=C grep -oE -- "\"$live_param=[^\"]*\"([[:space:]]|$)+" $live_param_file | sed -r -e "s|=\\\\\"|=\"|g" -e "s@\\\\\"([[:space:]]|$)+@\"@g" | sed -r -e 's|^\"(.*=)(.*=.*)*|\1\"\2|g' >> $mod_live_param_file

else

# For case like xxx=xyz, no space in its assignment

LC_ALL=C grep -oE -- "$live_param=([[:alnum:]]|_|-|\.|\/|:)*([[:space:]]|$)+" $live_param_file >> $mod_live_param_file

fi

done

. $mod_live_param_file

for live_param in $live_param_list; do

eval live_command=\$$live_param

if [ -n "$live_command" ]; then

echo "Now run \"$live_param\": $live_command..." >> /var/log/syslog

if [ "$(LANG=C file -Ls "$live_command" 2>/dev/null | grep -iE "shell script")" ]; then

$live_command

else

eval $live_command

fi

fi

done

[ -f "$mod_live_param_file" ] && rm -f $mod_live_param_file