This is a mix of tips and how-tos I gathered during the last weeks. Since there are too many tutorials, and some of them are old or incorrect I wanna make an easy and oriented one for anyone starting or for the guys with doubts remastering from CD.
I tried with knoppix, whoppix, miniknoppix, feather and some other knoppix based distros I can't remember.

Enjoy it.


1) First I created the partitions: hda1 with 1gb for SWAP, and hda2 with ~6gb for ext3.

2) Then I booted the live cd knoppix/feather/miniknoppix/<put your knoppix based distro name here>

3) Become root
sudo su

4) Mounting partition
mount -t ext3 /dev/hda2 /mnt/hda2

5) Creating folders
mkdir /mnt/hda2/source
mkdir /mnt/hda2/source/KNOPPIX
mkdir /mnt/hda2/master
mkdir /mnt/hda2/master/KNOPPIX
mkdir /mnt/hda2/master/boot
mkdir /mnt/hda2/master/boot/isolinux

6) Copying files
cp –a /KNOPPIX/* /mnt/hda2/source/KNOPPIX
cp /cdrom/boot/isolinux/* /mnt/hda2/master/boot/isolinux
rm -f /mnt/hda2/source/KNOPPIX/etc/resolv.conf
cp /etc/resolv.conf /mnt/hda2/source/KNOPPIX/etc/resolv.conf
cp /etc/X11/XF86Config-4 /mnt/hda2/source/KNOPPIX/etc/X11/XF86Config-4

6.1) To Edit BOOT LOGO read the post from "je" at:
http://www.knoppix.net/forum/viewtopic.php?t=7


7) Working inside the copied files (chroot)
cd /mnt/hda2/source
chroot KNOPPIX
mount -t proc /proc proc

8) Setting up the configurations to customise the distro inside X ;)
cd /home
cp -R /etc/skel knoppix
chown -R knoppix.knoppix knoppix/
vi /etc/X11/Xwrapper.config
Change the line:
allowed_users=console
to:
allowed_users=anybody

9) Now lets use the default user "knoppix" instead root to customize KDE
su knoppix
cd /home/knoppix
startx /usr/bin/startkde -- :1

10) Now change anything you want inside kde


11) Removing Stuff
apt-get update
apt-get remove --purge tetex-base
apt-get remove --purge kde-18n-**
apt-get remove --purge vim
apt-get remove --purge emacs21
apt-get remove --purge etc... and so on...
rm -rf /usr/src/*
rm -rf /usr/share/doc/*

12) To install stuff..
apt-get update
apt-get install packagename

13) Checking what we got installed. The next line will show in order what is installed and how big it is. We can remove them using: apt-get remove --purge packagename
dpkg-query -W —-showformat='${Installed-Size} ${Package}\n' | sort -n

14) Removing orphan packages (will remove useless stuff)
deborphan | xargs apt-get -y —purge remove
deborphan --find-config | xargs dpkg --purge

14.1) Find out what is big by folders
du -cb / | sort -n

15) Restoring some options we changed before
vi /etc/X11/Xwrapper.config
Change the line:
allowed_users=anybody
to:
allowed_users=console
rm -fr /etc/X11/XF86Config-4
vi /etc/resolv.conf
Change:
nameserver x.x.x.x
to:
#nameserver 127.0.0.1


16) Getting back to console
click on K (kde menu), LogOut, End Sesssion


17) Restoring skel (default user) folders, configs, files to be restored when the live cd is made
exit
cd /home
rm -rf /etc/skel
mv knoppix/ skel
mv skel /etc
chown -R root.root /etc/skel

18) Clear stuff and things we typed
apt-get clean
apt-get autoclean
rm -f /etc/skel/.bash_history
rm -f root/.bash_history


19) Done. Let's get out from chroot and come back to the live cd we booted.
umount /proc
CTRL+d


20) Lets create an image of what we have done
mkisofs –R /mnt/hda2/source/KNOPPIX | create_compressed_fs –b – 65536 > /mnt/hda2/master/KNOPPIX/KNOPPIX

21) And finally, let's create the .iso file
cd /mnt/hda2/master
mkisofs -pad -l -r -J -v -V "MyDistro" -no-emul-boot -boot-load-size 4 -boot-info-table -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat -hide-rr-moved -o MyDistro.iso /mnt/hda2/master/


If you have anyother tips or errors/typos I did, please post it. Let's make a good guide that can be done for everyone and learn with the process.