Hello,

I'm trying to make an unattended installation of RHEL7 using kickstart-file and booting from a DVD, and I get the somewhat classical error message:
But even when I try to just boot the DVD without any boot-options och pointers to ks-files I get the same error. I.e. when I just choose to install RHEL7 from the normal boot menu. So I reckon it doesn't have anything to do with my ks-file, more my iso-file?

I've created my DVD using:
A webb search of the problem seems to indicate that a great number of things can cause this problem but none of the answers apply to me though.
The problem also exist no matter if I use a physical machine or a VM, if Im on an online machine or an offline machine. Does it have to do with not finding installation repos or something like that?


Regards,
/Pelle

It looks like you didn't build your install DVD properly. What happens with the commercially available install DVD?

Yea think so too. If I burn the rhel-client-7.0-x86_64-dvd.iso to DVD it boots fine and I can install from it.

But Im also a bit curious because some instructions say different things. Should I boot the machine from the official DVD, pass the ks option and
then switch DVD-disc?
Or should I boot from my own install DVD, pass the ks option and then switch to the official DVD?

If the commercial install DVD works, why do you need your other improperly built DVD? You can simply install your system from the commercial DVD.

The unattended installation using kickstart file is the goal. And trying without the ks-file was just for testing if the error persisted.

So now I tested booting from the RHEL7-DVD, passing the ks-file-option and then inserting my red hat-DVD with the ks-file. The system
continues for a while and I can see that it reads the ks-file:
But after a minute I get the same error: Could not boot, /dev/root does not exist.

I get a row of red text in the log saying:
Is that the cause to all of this?


According to Red Hat:
So it seems when the installation has read the ks-file and again should be asking for the RHEL7-DVD to start the installation, something goes wrong...

You need to continue installing from the commercial DVD and not use your own DVD at all. Supposing you have your ks file on a USB stick and have the commercial DVD access it there, so that the installation continues with the commercial DVD.

Yes I will probably have to go with having the ks-file on a USB-stick. That works at least but you loose configuring isolinux.cfg and
other things.
Thanks for the input!

/P

side question:

why not boot from a USB with the ks, but have it point to the mounted .iso of the DVD on your network for unattended would that not work?

Probably, this is a server which doesn't have network to any files shares or FTPs though.

ahh got ya. sorry was just thinking on how it might help.

Did you get past this "/dev/root does not exist" issue ?
We are getting it with a RHEL 7.0 UEFI Kickstart boot, no problem with isolinux.

And before the peanut gallery chimes in about using the OEM iso, that is not the question.
The question is what needs to be modified so that a RHEL 7.0 kickstart iso will boot with UEFI?

This is necessary for Generation 2 Hyper-V installation, the customizations address Stig applications for deployment.

Scott M.

Community thanks for the assistance, we resolved the issues of creating a custom image of RHEL 7.0 on Generation 2, (UEFI boot).
Modified and We then had a RedHat 7.0 ISO that could be used on Hyper-V Generation 2. Of course there was "ks.cfg" kickstart file.

1 members found this post helpful.

Thanks scotter59, it helped me out, things have changed and in order to get this working
on newer releases if you have similar to following in the kernel boot line

the LABEL has to match the labels you set with genisoimage.

I am not sure which or all of the string parameters have to match, i replaced all of them and
the error went away.

Sorry for necro-bumping.