On 04/03/2012 04:13 AM, Sukesh Nischal wrote:
Hi
I'm trying to setup a PXE boot environment to start a LiveCD.
I've setup DHCP/ tftpboot and this has tested fine doing kickstart
installations. Next step is to be able to boot a live cd
Ive created a custom live cd ISO which boots fine from a USB stick.
I then ran livecd-iso-to-pxeboot to generate a tftpboot directory and
merged this with my existing configs.
The problem I'm getting is that the booting stops at 'Cannot open root
device live:/livecd/livecd.iso'
This sounds like you didn't 'name' your version and it is using the
default name, and not what it really is, or you used the wrong
compression method.
When making the livecd, you can name it, such as:
livecd-creator --verbose --fslabel=centos_server_kvm
--compression-type=gzip --cache=/var/tmp/livecache
--config=http://mirror.fiber.net/ks/centos_server_kvm.ks
You are welcome to examine and comment on my custom kickstart, but the
trick here is the name.
By using '--fslabel=centos_server_kvm' this works:
livecd-iso-to-pxeboot `pwd`/centos_server_kvm.iso
and produces:
DEFAULT pxeboot
TIMEOUT 20
PROMPT 0
LABEL pxeboot
KERNEL vmlinuz0
APPEND rootflags=loop initrd=initrd0.img
root=live:/centos_server_kvm.iso rootfstype=auto ro liveimg quiet rhgb
rd.luks=0 rd.md=0 rd.dm=0
ONERROR LOCALBOOT 0
Note the name change from yours. I think that by default if no name is
given, there may be an issue with the defaults: LiveCD vs livecd or
something silly like that. So just name it when you roll it up. Its
always better to account for assumptions between different apps.
As a side note, if you are using Fedora vs CentOS/RHEL to create the
livecd, it will default to a compression that the older kernel cannot use.
This may also be the cause of your problem.
Note the '--compression-type=gzip' command line argument.
Between these two issues, you should be golden.
Good Luck!
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