Distro_Builder/NOTES_LICENCE/Chroot_Distro_Build.txt

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############################
#### SETUP & INFO ####
############################
## WEBSITES
Window Managers :
http://xwinman.org/
Source List Generator :
https://repogen.simplylinux.ch/index.php
Themes :
http://gnome-look.org/
Debootstrap Versions:
http://packages.ubuntu.com/search?keywords=debootstrap&searchon=names&suite=all&section=all
Ubuntu-Mini-Remix :
http://www.ubuntu-mini-remix.org/
SYSLINUX (Booting Live systems or install state)
http://www.syslinux.org/wiki/index.php?title=HowTos#New_users (THIS COVERS BOOT METHODS FOR USB, CD, EFI, ETC)
http://www.syslinux.org/wiki/index.php?title=ISOLINUX (THIS CREATES THE BOOT STRUCTURE FOR THE ISO!!!)
SYSLINUX Archive (Needed for isolinux.bin && ldlinux.c32 to follow instructions in above link!!)
https://www.kernel.org/pub/linux/utils/boot/syslinux/
NON SYSLINUX ARCHIVE METHOD (Try and get files from here)
/usr/lib/syslinux/
Good Reference :
http://willhaley.com/blog/create-a-custom-debian-stretch-live-environment-ubuntu-17-zesty/
Other :
https://wiki.ubuntu.com/Releases
http://archive.ubuntu.com/ubuntu/
http://archive.ubuntu.com/ubuntu/pool/main/d/debootstrap/
--- SIDE NOTE ---
Ubuntu Mini Remix contains:
- ubuntu-minimal (this is a metapackage, details at https://packages.ubuntu.com/cgi-bin/search_packages.pl?keywords=ubuntu-minimal&searchon=names&subword=1&version=all&release=all)
- ubuntu-standard (this is a metapackage, details at https://packages.ubuntu.com/cgi-bin/search_packages.pl?keywords=ubuntu-standard&searchon=names&subword=1&version=all&release=all)
- casper
- lupin-casper
## SETUP DIR STRUCTURE
*** buildDir is where you are maintaining the squashfs and iso bits
mkdir -p buildDir/iso/{casper,isolinux,install}
## holds where squshfs goes after modding.
## HAS ALL UNCOMPRESSED ISO BITS EXCLUDING SQUASHFS
## OR CONTAINS DEBOOTSTRAP GENERATED DIR STRUCTURE
mkdir buildDir/squashfs-root/
## this is where we can extract a squashfs
## from an iso OR generate our own from debootstrap.
** EXTRACTING A SQUASHFS CREATES THIS
** ONLY DO WHEN DEBOOTSTRAPING
## PACKAGES NEEDED PRIOR TO DOING ANYTHING
sudo apt-get install xnest xserver-xephyr syslinux squashfs-tools genisoimage debootstrap
## debootstrap needs to be the version you're building
## ie, building vivid then need vivid's debootstrap
## link above has versions to dl
## FOR GUI CHROOT LIKE ENVIRONMENT
**** In a seperate terminal from build terminal
Xnest -ac :10 -geometry 1920x1080 ## Monitor resolution
OR
Xephyr -resizeable -screen 1920x1080 :10
############################
#### BUILD METHODS ####
############################
## BUILDING FROM AN Ubuntu-Mini-Remix
-- DL Ubuntu-Mini-Remix [link above] and mount it
-- copy out its contents to the iso/ dir
GET THE HIDDEN .disk/ dir! ISO WILL FAIL OTHERWISE!!
-- from that, copy the iso/casper/filesystem.squashfs to the same dir
as iso/ dir
-- unsquashfs filesystem.squashfs
## BUILDING FROM AN DEBOOTSTRAP
## same location as iso/
sudo debootstrap --variant=buildd <code name such as vivid> <chroot path> http://archive.ubuntu.com/ubuntu/
OR
sudo debootstrap --arch=amd64 vivid squashfs-root/ ## For 32bit use --arch=i386
############################
#### BUILD PROCESS ####
############################
cd squashfs-root/
sudo mount -t proc proc proc/
sudo mount -t sysfs sys sys/
sudo mount -o bind /dev dev/
sudo cp /etc/resolv.conf etc/
sudo cp /etc/hosts etc/hosts ## do this one if in debootstrap
sudo chroot . bash
export HOME=/root
export LC_ALL=C
export DISPLAY=:10
## GET sourcelist from source list generator [link above]
nano it to /etc/apt/sources.list
apt-get upgrade
## INSTALL AND MOD STUFF
apt-get update
apt-get install --yes dbus
apt-get install -y ubuntu-standard casper lupin-casper
apt-get install -y laptop-detect os-prober
apt-get install -y linux-generic
## tasksel lets you ionstall various setups
apt-get install -y xserver-xorg xorg xinit ubiquity-frontend-gtk tasksel synaptic aptitude apt-xapian-index
## just a ref
apt-get install mate-core sddm
## change live cd user
nano etc/casper.conf
############################
#### CLEAN PROCESS ####
############################
##Clean the older non-used kernels to save space:
dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "s/\(.*\)-\([^0-9]\+\)/\1/")"'/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d' | xargs sudo apt-get -y purge
## CLEAN SYSTEM
apt-get autoremove --purge
apt-get autoclean
rm -rf tmp/*
rm /etc/resolv.conf
rm /var/lib/dbus/machine-id
rm /sbin/initctl
dpkg-divert --rename --remove /sbin/initctl
## in chroot or outer
umount -lf dev/
umount -lf proc/
umount -lf sys/
exit
EDIT to change names of Ubuntu
iso/isolinux/txt.cfg
################################
#### Recreate manifest ####
################################
sudo chroot squashfs-root/ dpkg-query -W --showformat='${Package} ${Version}\n' | sudo tee iso/casper/filesystem.manifest
sudo cp -v iso/casper/filesystem.manifest iso/casper/filesystem.manifest-desktop
PUT IN SCRIPT >>>
REMOVE='ubiquity ubiquity-frontend-gtk ubiquity-frontend-kde casper lupin-casper live-initramfs user-setup discover1 xresprobe os-prober libdebian-installer4'
for i in $REMOVE
do
sudo sed -i "/${i}/d" iso/casper/filesystem.manifest-desktop
done
############################
#### MAKE SQUASHFS ####
############################
If this Customised Remix is to potentially be installed on some systems then
the /boot folder will be needed. To allow the Customised Cd to be an
installer Cd, compress the entire chroot folder with this command:
## avg compression
sudo mksquashfs squashfs-root/ iso/casper/filesystem.squashfs
## best compression
sudo mksquashfs squashfs-root/ iso/casper/filesystem.squashfs -comp xz -e squashfs-root/boot
Then write the filesystem.size file, which is needed by the installer:
sudo chmod 644 iso/casper/filesystem.size
printf $(sudo du -sx --block-size=1 squashfs-root/ | cut -f1) > iso/casper/filesystem.size
sudo chmod 444 iso/casper/filesystem.size
############################
#### Calculate MD5 ####
############################
This calculates the md5sum of everything in the image folder,
except the file named md5sum.txt.
sudo -s
(cd iso && find . -type f -print0 | xargs -0 md5sum | grep -v "\./md5sum.txt" > SHA256SUMS)
exit
###############################
#### Create ISO Image ####
###############################
Create iso from the image directory using the command-line
cd iso/
OPTION 1::
## Works for me....
sudo mkisofs -D -r -cache-inodes -J -l -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -o ../Sol-OSv3.iso .
OR
sudo mkisofs -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -o ../Sol-OSv3.iso ./
OPTION 2::
## Hasn't worked for me....
sudo mkisofs -r -no-emul-boot -boot-load-size 4 -o ../ubu-mini.iso -b isolinux/isolinux.bin -c isolinux/boot.cat ./