I am trying to use kickstart for automated builds from a DVD. Some of the machines have DVD's drives and some have CDRom drives only. With the CDRom only machines I would like to plug in an external DVD drive via USB and use this to kickstart. The DVD only machines work correctly with a isolinux.cfg as label test kernel vmlinuz append initrd=initrd.img ramdisk_size=8192 ks=cdrom:/test-ks.cfg Machines with a internal CDRom drive and the external USB DVD do not find the kickstart so I figure that I need to change the ks=cdrom:/test-ks.cfg to something else. I have tried the following with no success label test2 kernel vmlinuz append initrd=initrd.img ramdisk_size=8192 ks=cdrom1:/test-ks.cfg To save me producing lots of coasters can anyone tell me what the "ks=cdrom" should be changed to. Thanks Dean.