Revision as of 07:38, 19 August 2005

This remaster script will extract the files from the existing CD and rebuild a new ISO. No changes are made to the files used to build the ISO.

Based on the Knoppix Remastering Howto

This remastering assumes the following:

• you are running Knoppix 3.8.2
• you have a linux filesystem with at least 6 GB of free space

Setting up for remastering

This will be the same for all the various version of remastering.

# boot from the Knoppix CD
boot: knoppix 3

# point to the partition, mountpoint, and working directory for the Knoppix build
knx_dev=/dev/hda3 ; knx_mnt=/mnt/hda3 ; knx=$knx_mnt/knx

# Mount the partition
mount -o rw,dev $knx_dev $knx_mnt
mount
df -H $knx_mnt

# make a 1 GB swapfile
dd if=/dev/zero of=$knx_mnt/swapfile bs=1M count=1000
mkswap $knx_mnt/swapfile
swapon $knx_mnt/swapfile
swapon -s

# create a working directory
mkdir $knx
cd $knx
pwd

# make two target folders: one for the source and one for the final master CD
mkdir -p $knx/{master,source}
ls -la $knx

# finished setup

A "test build" version

Ideal if you just want to test the build process. This version uses the files right off the CD to make a new ISO. No changes.

Setting up for remastering

See the above instructions for booting, creating enough disk space, and a setting up a swap file.

Copying the files

# copy the cdrom files to your master directory
( cd /cdrom && cp -a . $knx/master/ )
ls -la $knx/master/

# finished copying the files

Making the image

# make the ISO
mkisofs -pad -l -r -J -v -V "KNOPPIX" -no-emul-boot -boot-load-size 4 \
 -boot-info-table -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat \
 -hide-rr-moved -o $knx/knoppix.iso $knx/master 2> $knx/knoppix.iso.log
ls -la $knx/knoppix.iso

# finished imaging the ISO

Version 2 - modifying the boot files

Ideal if you just want to change the boot configuation (e.g. add your own cheatcodes or kernel label) but keep everything else the same.

Setting up for remastering

See the above instructions for booting, creating enough disk space, and a setting up a swap file.

Mounting a union filesystem

Instead of copying all the files, we'll use a unionfs.

mount -t unionfs -o dirs=$knx/master=rw:/cdrom=ro none $knx/master
ls -la $knx/master/

# at this point you can modify any of the files in $knx/master/

# finished copying the files

Making the image

# make the ISO
mkisofs -pad -l -r -J -v -V "KNOPPIX" -no-emul-boot -boot-load-size 4 \
 -boot-info-table -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat \
 -hide-rr-moved -o $knx/knoppix.iso $knx/master 2> $knx/knoppix.iso.log
ls -la $knx/knoppix.iso

# finished imaging the ISO

Unmounting the union filesystem

umount $knx/master
find $knx/master -ls

# finished umounting

Version 3 - rebuilding the compressed ISO fs

Setting up for remastering

See the above instructions for booting, creating enough disk space, and a setting up a swap file.

Copying the files

# copy the cdrom files to your master directory
( cd /cdrom &&
find . -size -10000k -type f |
xargs cp -a --parents --target-directory=$knx/master/ )
ls -la $knx/master/

# copy the KNOPPIX files to your source directory
cp -a /KNOPPIX/* $knx/source/
ls -la $knx/source/

# finished copying the files

Making the image

# make the compressed image
{ mkisofs -R -U -V "KNOPPIX.net filesystem" -publisher "KNOPPIX www.knoppix.net" \
  -hide-rr-moved -cache-inodes -no-bak -pad $knx/source |
nice -5 /usr/bin/create_compressed_fs - 65536 \
> $knx/master/KNOPPIX/KNOPPIX ; } 2> $knx/KNOPPIX.cloop.log
ls -la $knx/master/KNOPPIX/KNOPPIX

# make the ISO
mkisofs -pad -l -r -J -v -V "KNOPPIX" -no-emul-boot -boot-load-size 4 \
 -boot-info-table -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat \
 -hide-rr-moved -o $knx/knoppix.iso $knx/master 2> $knx/knoppix.iso.log
ls -la $knx/knoppix.iso

# finished imaging the ISO