[Fedora-livecd-list] booting LiveCD ISO using PXELINUX

[mammar]

Hi,

As far as i know, when a client boots over network using pxe, to boot linux
it just need the following two files extracted from the iso image

vmlinuz: compressed Linux kernel executable
initrd (initail RAM disk): initial root file system

The client download the above two files and then start booting the linux.
Other files are for supporting the pxe protocol.

It doesn't need the ISO.

I think label Fedora-13-live.iso is used by dracut during mount the rootfs.

*It would be great if someone can describe in detail the purpose of
root=live:/ISOLABEL and why only correct iso image label work.  *


Regards,

On Thu, Dec 2, 2010 at 11:09 PM, msacks <ntwrkd at gmail.com> wrote:

> Thanks mammar,
> I will give this a try. I hadn't used the livecd-iso-to-pxeboot script
> before. A question about the root=live:/Fedora-13-live.iso, does the
> ISO file actually get read over the network or are you just specifying
> the label of the ISO?
>
> On Wed, Dec 1, 2010 at 11:11 PM, mammar <mammar at gmail.com> wrote:
> > Hi,
> >
> > I have been using PXELINUX on Fedora 13 and Fedora 14 and everything is
> > working great.
> >
> > Try the following in your pxelinux config file (changes are in red color)
> >
> > I am assuming that your is name is fedora-livecd.iso
> >
> > label LiveCD
> >  MENU LABEL LiveCD
> >  kernel livecd/vmlinuz0
> >  append initrd=livecd/initrd0.img media=network
> > rootflags=loop root=live:/fedora-livecd.iso rootfstype=iso9660 ro liveimg
> > rhgb rd_NO_LUKS rd_NO_MD rd_NO_DM ramdisk_size=164212 init=/bin/init
> > iso1=nfs://imagesrv/fedora-livecd.iso
> >
> >
> > Following is my pxelinux configuration
> >
> >
> > label linux0
> >   menu label Fedora Network Installer
> >   kernel liveiso/vmlinuz0
> >   APPEND rootflags=loop initrd=liveiso/initrd0.img
> > root=live:/Fedora-13-live.iso rootfstype=iso9660 rw liveimg rhgb
> > rd_NO_LUKS   rd_NO_MD quiet
> >
> >
> > I am using livecd-iso-to-pxeboot script from livecd-tools package to
> extract
> > the iso.
> >
> >
> > Regards,
> >
> >
> >
> > On Thu, Dec 2, 2010 at 5:51 AM, msacks <ntwrkd at gmail.com> wrote:
> >>
> >> I'm stuck trying to get a Fedora 13 based LiveCD to boot using
> >> PXELINUX. I confirmed that the LiveCD once burned to an ISO boots
> >> fine, likewise running the ISO file inside of a VM.
> >>
> >> I've seen a host of bugs opened on Redhat bugzilla around this issue,
> >> but none of them really point to a finite resolution.
> >> I hope to shake out some clues as to how to resolve this issue.
> >>
> >> Here is my PXELINUX Config:
> >>
> >> label LiveCD
> >>  MENU LABEL LiveCD
> >>  kernel livecd/vmlinuz0
> >>  append initrd=livecd/initrd0.img media=network
> >> root=live:CDLABEL=F13-LiveCD-POC-20101201-122711 rootfstype=auto ro
> >> liveimg rhgb rd_NO_LUKS rd_NO_MD rd_NO_DM ramdisk_size=164212
> >> init=/bin/init  iso1=nfs://imagesrv/fedora-livecd.iso
> >>
> >> I am running syslinux-3.82-8.9.2
> >> livecd-tools-033-3.fc13.x86_64
> >> squashfs 4.0
> >>
> >> What happens is I see the blue Fedora status bar loading up just fine,
> >> then it throws an error saying
> >> "No root device found"
> >> "Boot has failed, sleeping forever"
> >>
> >> What should the root device be?
> >> Is this a bug with squash or configuration error?
> >> --
> >> livecd mailing list
> >> livecd at lists.fedoraproject.org
> >> https://admin.fedoraproject.org/mailman/listinfo/livecd
> >
> >
> > --
> > livecd mailing list
> > livecd at lists.fedoraproject.org
> > https://admin.fedoraproject.org/mailman/listinfo/livecd
> >
> --
> livecd mailing list
> livecd at lists.fedoraproject.org
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>
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