[syslinux] PXELINUX: initrd loading failed

[Muhammad Ammar]

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)

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
>
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