Pxe booting ubuntu live cd

[Upendra Moturi]

Hi,

I want to have pxe to boot a customized live cd.
I am success using nfs server with pxe.
pxelinux.cfg is

LABEL linux
        kernel liveimage/vmlinuz
append root=/dev/nfs boot=casper netboot=nfs nfsroot=server:/path/to/livecd
ip=dhcp initrd=liveimage/initrd.gz quiet splash --
PROMPT 0
TIMEOUT 0

but i now i want to load the source from same tftp server instead of using
nfs server.I placed the livecd source in tftpboot dir.
I tried changing pxelinux.cfg to
LABEL linux
        kernel liveimage/vmlinuz
append ip=dhcp initrd=liveimage/initrd.gz boot=casper root=/dev/ram0
ramdisk=51200 quiet splash rw --
PROMPT 0
TIMEOUT 0

or root = /dev/rd/0 or root = /dev/sda1, but is throws error saying

missing module(cat /proc/modules , ls /dev)

"ALERT! /dev/ram0 does not exist. Dropping to a shell!" and then drops
me to a busybox shell.



Has anyone else gone through a setup similar to this?
Any help would  be apreciated.
Thanks in advance.

-- 
Thanks and Regards,
Upendra.M
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