When using an etherboot or BOOTP boot ROM network booting is quite
straightforward:
The client PC contacts the DHCP or BOOTP server to get its IP address and
the name of the boot image file (ltsp kernel) to transfer down and execute.
The client PC uses TFTP to download the ltsp kernel from the boot server;
hence the reason for the TFTP daemon.
In PXE booting, things are little different. The PXE client must first
download the network bootstrap program (nbp) or PXE loader. The PXE loader
will in turn transfer down the ltsp kernel. Why is this so? This is just
the nature of PXE.
The PXE loader or nbp must not be greater than 32K in size; otherwise,
you'll get the unintuitive "PXE-E3A TFTP too many packages" error.
In the case of PXELINUX, the PXE loader is the called pxelinux.0.
pxelinux.0 reads the default.cfg file to determine the ltsp kernel to
download. If you find the PXELINUX approach too complicated then try
the PXE-Etherboot
<http://www.ltsp.org/documentation/pxe.howto.html>approach
On Dec 28, 2007 9:39 PM, Nagilum <[EMAIL PROTECTED]> wrote:
> > Nagilum escribió:
> > > PXE-T01: File not found
> > > PXE-E3B: TFTP Error - File Not found
> > >
> > > The unattended documentation about netwoork boot is very short and
> > > doesn't give me a hint.
> > > Can anyone help me?
> >
> > check your files on the tftp server:
> >
> > ntinstall:/srv/tftp# ls -l /srv/tftp
> > total 16228
> > -rw-r--r-- 1 cheche cheche 1298200 2007-12-18 21:02 bzImage
> > -rw-r--r-- 1 cheche cheche 15272784 2007-12-18 21:03 initrd
> > -rw-r--r-- 1 root root 13480 2007-03-09 01:25 pxelinux.0
> > drwxr-xr-x 2 cheche cheche 4096 2007-12-18 21:03 pxelinux.cfg
> > ntinstall:/srv/tftp#
>
> Thx, I've missed the pxelinux.0 and made a dumb mistake on the config of
> atftpd, so it didn't get the right tftproot.
>
> Corrected that, moved pxelinux.0 from syslinux 3.54 and now it also looks
> like that:
>
> [EMAIL PROTECTED]:~/unattended-4.7/linuxboot/tftpboot$ ls -l
> insgesamt 16096
> -rw-r--r-- 1 christof christof 1298200 2007-12-23 16:12 bzImage
> -rw-r--r-- 1 christof christof 15137104 2007-12-23 16:13 initrd
> -rw-r--r-- 1 christof christof 12952 2005-05-20 17:00 pxelinux.0
> drwxr-xr-x 2 christof christof 4096 2007-12-22 19:22 pxelinux.cfg
>
> But now it says:
> PXE-E79: NBP is too big to fit in free base memory
> PXE-M0F: Exiting Intel PXE ROM.
>
> Why is it too big?
>
>
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--
Regards,
Conrad Lawes
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