[rhelv6-list] Kickstarting RHEL7

[Ben]

Hi Guys,

Apologies for using the RHEL6 list for a RHEL7 issue.  But in the absence of 
an official RHEL7 discussion list...

I'm trying to manually kickstart a RHEL7 Workstation.  By which I mean 
booting from a USB stick, specifying network details manually once the 
install screens appear, and then specifying the installation method as HTTP 
and giving the URL.

As I've done with RHELs 3-6 I copied the vmlinuz and initrd.img from the 
ISO's /images/pxeboot directory to a USB stick and added a section to the 
stick's syslinux.cfg of the form:

label manual7-64
   kernel vmli7-64
   append initrd=init7-64.img

Booting from the stick, at the boot: prompt I then type "manual7-64".  This 
causes the usual boot scroll I'm used to... until it ends with

dracut-initqueue[620]: mount: no medium found on /dev/sr0
dracut-initqueue[620]: Warning: Couldn't mount /dev/sr0
dracut-initqueue[620]: Warning: no suitable images
dracut-initqueue[620]: Warning: Could not boot.
dracut-initqueue[620]: Warning: /dev/root does not exist

It then drops to a dracut emergency shell and seems to have run sosreport 
(which doesn't seem to contain anything helpful).

What am I missing, please?  Do I need to specify something to tell it not to 
look at the DVD drive?

Ben
-- 
Unix Support, MISD, University of Cambridge, England