I can only say how to do it with mkisofs
1) Mount the ISO somewhere. Example:
Code:
su
mkdir /mnt/dsl
mount -o loop /path/to/dsl-1.0rc1.iso /mnt/dsl
2) Copy the contents of /mnt/dsl to a writeable directory.
3) Add whatever you want to the directory structure.
4) Enter the /mnt/dsl directory and rebuild the ISO:
Code:
mkisofs -r -l -b KNOPPIX/boot.img -c KNOPPIX/boot.cat -o /path/to/new/isofile.iso ./