Debian LiveCD
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Introduction
- Sometimes we need to boot Linux without HDD e.g. if you want to experiment with HDD encryption, enable/disable it without causing damage to your data. For such cases we need a LiveCD which doesn't mount HDD at boot.
Creating Initial System with debootstrap
apt-get install debootstrap
mkdir livecd
debootstrap --arch powerpc squeeze /root/livecd http://ftp.us.debian.org/debian
# Grab a beer and reverse some PS3 stuff in the meantime :)
# Enter chroot environment
mount -t proc none /root/livecd/proc
mount --rbind /dev /root/livecd/dev
LANG=C chroot /root/livecd /bin/bash
export TERM=xterm-color
echo "debian" > /etc/hostname
dpkg-reconfigure tzdata
# Configure network interfaces
cat /etc/network/interfaces
---
auto lo
iface lo inet loopback
allow-hotplug eth0
iface eth0 inet dhcp
allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-ssid ssid
wpa-psk psk
-EOF-
# Configure APT
cat /etc/apt/sources.list
---
deb http://ftp.us.debian.org/debian squeeze main
deb-src http://ftp.us.debian.org/debian squeeze main
deb http://security.debian.org squeeze/updates main
deb-src http://security.debian.org squeeze/updates main
-EOF-
aptitude update
aptitude install locales
dpkg-reconfigure locales
aptitude install console-data
dpkg-reconfigure console-data
tasksel install standard
aptitude install binutils gcc make git vim openssh-server sudo wpasupplicant libssl-dev
aptitude install gcc-spu g++-spu newlib-spu spu-tools
update-rc.d ssh defaults
aptitude clean
Creating Root Filesystem
cd /root/livecd mksquashfs * ../root.sfs
Initramfs
Linux 3 Kernel
- We need a Linux 3 kernel with overlayfs support so we could create a tmpfs over our read-only base filesystem.
- At the moment overlayfs is not supported on Linux 3.5 so it leaves us with Linux 3.4 which doesn't really matter because all my Linux 3 drivers are supported on Linux 3.4 just fine.
- Furthermore, we want to compile PS3 HDD driver as module because in this case we can easily change HDD region flags.