Thanks for the pointer. I've started down that path after writing the email. It seems buildinstall calls mk-images, etc, etc. Looks like I just need to get the kernel-lt rpms in place and possibly modify mk-images to look for it. It's been a while since I've had to dig into this sort of thing. -Mark On 04/18/2017 03:21 PM, Pat Riehecky wrote: > I believe that is all generated via the buildinstall script from the > anaconda-runtime rpm under /usr/lib/anaconda-runtime. > > If memory serves it spits out usage information if you don't provide any > args. > > Pat > > On 04/18/2017 02:48 PM, Mark Stodola wrote: >> Is there a resource/information/script on generating the initrd.img >> used in the SL5 installation media? I'm trying to inject kernel-lt >> from ELrepo in place of the usual one. Replacing vmlinuz is easy, but >> I'm not sure where to start getting the initrd updated with the >> appropriate kernel modules. >> >> I already know how to unpack the initrd, but I'm unsure how/where the >> modules included in it are selected, gathered, and supporting files >> created. >> >> -Mark >