gistfile1.txt

    mkdir initrd-adapt                                                                                                                                                                                             
    cd initrd-adapt/                                                                                                                                                                                               
    wget http://cdimage.debian.org/cdimage/unofficial/non-free/firmware/jessie/current/firmware.tar.gz                                                                                                             
    mkdir firmware                                                                                                                                                                                                 
    tar -C firmware -zxf firmware.tar.gz                                                                                                                                                                           
    apt-get install pax                                                                                                                                                                                            
    pax -x sv4cpio -s'%firmware%/firmware%' -w firmware | gzip -c >firmware.cpio.gz                                                                                                                                
    cp /srv/www/cobbler/ks_mirror/jessiedvd-x86_64/debian-installer/amd64/initrd.gz  initrd.gz.orig                                                                                                                
    cat initrd.gz.orig firmware.cpio.gz > /srv/tftp/images/jessiedvd-x86_64/initrd.gz