[syslinux] Kernel panic: I have no root and I want to scream

[H.J.P. Hoogeveen]

Hello,

I'm trying to fix netbooting and I got quit far.
Before this, it reported that it had no root disk, I fixed this by 
specifying my initrd. Nou it crys's:
Kernel panic: I have no root and I want to scream

I think I made the mistake whit the creation of the initrd file. What 
should I put in it except the /linuxrc.
I put a echo "TEST" in de /linuxrc to see if it runs, in stead of TEST I 
get kernel panic.

thanks for helping,

Mivz

pcelinux.cfg:

label linux
         kernel linux
         append initrd=initrd
         append root=/dev/rd/0