[syslinux] PXELINUX: initrd loading failed

Muhammad Ammar mammar at gmail.com
Thu Sep 30 08:21:14 PDT 2010


no effect with

boot: linux0

still hanged

The frustrating thing is that, there is not single message which can atleast
tell whats going on.

Regards,

On Thu, Sep 30, 2010 at 5:32 PM, Gene Cumm <gene.cumm at gmail.com> wrote:

> On Thu, Sep 30, 2010 at 07:16, Muhammad Ammar <mammar at gmail.com> wrote:
> > I build a minimal FC13 using kickstart and livecd-creator.
> >
> > Then i created vmlinuz0 and initrd0.img using livecd-iso-to-pxeboot shell
> > script.
> >
> > The  'root=' and 'rootfstype=' parameters were added
> > by livecd-iso-to-pxeboot shell script.
> >
> > Now i have installed 1GB RAM, the following message has gone now
> >
> >  initrd too large to handle, disabling initrd
> >  Kernel panic - not syncing: VFS: Unable to mount root fs
> > on unknown-block(0,0)
> >
> > but it still not loading the OS and hanged(show the syslinux menu and
> upon
> > menu entry selection nothing happens)
>
> Are you using menu.c32/vesamenu.c32?  If so, exit from the menu system
> to the "boot: " prompt and type "linux0" (the LABEL in question;
> without quotes, of course) and watch its output.  This should help you
> in seeing if there's a hidden error.
>
> > Regards,
> >
> > On Thu, Sep 30, 2010 at 4:00 PM, Geert Stappers <stappers at stappers.nl
> >wrote:
> >
> >> Op 20100930 om 15:11 schreef Muhammad Ammar:
> >> > On Thu, Sep 30, 2010 at 2:39 PM, Ferenc Wagner <wferi at niif.hu> wrote:
> >> > > Muhammad Ammar <mammar at gmail.com> writes:
> >> > >
> >> > > > initrd too large to handle, disabling initrd
> >> > > > Kernel panic - not syncing: VFS: Unable to mount root fs on
> >> > > > unknown-block(0,0)
> >> > > >
> >> > > > Size of initrd0.img is approx. 317 MB
> >> > > > Size of vmlinuz is approx. 4 MB
> >> > > >
> >> > > > Note: The problem is on just one system, all other systems boot
> >> > > > without any problem.
> >> > >
> >> > > Maybe this system hasn't got enough memory for this initrd?
> >> >
> >> > I have a 512MB RAM in it. Is this not enough?
> >> > How can i calculate amount of memory needed for network boot?
> >>
> >> I'm not sure there is an "out of memory error".
> >>
> >> What I see is :
> >> > > > Kernel panic - not syncing: VFS: Unable to mount root fs on
> >> > > > unknown-block(0,0)
> >>
> >> So we have 'Unable to mount root fs'  and "unknown-block"
> >>
> >> Please explain what the idea is behind
> >>
> >> | label linux0
> >> | menu label MyFedora13 (default)
> >> |   kernel vmlinuz0
> >> | APPEND rootflags=loop initrd=initrd0.img root=live:/FC13.iso
> >> | rootfstype=iso9660 rw liveimg quiet selinux=0 rhgb rd_NO_LUKS rd_NO_MD
> >> | noiswmd blacklist nouveau
> >>
> >> especial the idea about 'root=' and 'rootfstype='
> >>
> >>
> >> Cheers
> >> Geert Stappers
>
> --
> -Gene
>
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