how to create initrd for pxe kickstart boot

[Chris Edillon]

Nicholas Byrne wrote:
> what distribution are you using? It might be a cpio archive or in cramfs
> filesystem - start here http://wiki.openvz.org/Modifying_initrd_image

   unfortunately that won't help with a PXEboot initrd.img,
which is very different under the hood.  this may help:

http://www.redhat.com/archives/kickstart-list/2007-May/msg00081.html

it covers modifying an existing driver.  adding a new driver
won't be much different, except you'll also need proper information
for the module-info and pcitable files for your new driver.  it
looks like you already found this link from your message:

https://listman.redhat.com/archives/kickstart-list/2003-March/msg00183.html

which should help with modifying the pcitable.

> But once you've unzipped it, type "file init" to see what it is
> 
   nicholas is right, you should see if the initrd.img file you
are starting with is a compressed filesystem image.  if it's
a cpio archive, you can start by unarchiving it to a directory
and hacking away.  if it's cramfs, you'll need to mount it,
copy the contents to a writable directory (cramfs is read-only),
modify, and use mkcramfs against the writable directory to
create a new image.  something like:

     mkdir /tmp/mnt
     mount -o loop cramfs.img /mnt
     rsync -avW /mnt/ /tmp/mnt
     <changes to /tmp/mnt data here>
     mkcramfs /tmp/mnt /tmp/cramfs-new.img

hope this helps,
  chris