[syslinux] problems with pxelinux

[Davide Carboni]

Hi. I'm quite new in Linux under-the-hood. I'm trying to net-boot a 
tablet Pc with no CD and FD. I successfully installed and configured 
DHCP and TFTP.


I wrote a /tftpboot/pxelinux.cfg/default config file as follows:

> label linux_test
>         kernel vmlinuz
>         append root=initrd


but it seems to ignore the two directives "kernel" and "append" as it 
says that no file named "linux" was found and prompts "boot:".

If I keyboard-input "vmlinuz" the loading goes on, it seems to load a 
kernel image but then it hangs claiming for a root device.


---console---
...
...
VFS:Cannot open root device "" or 08:05
Please append a correct "root=" boot option
Kernel panic: VFS: Unable to mount root fs on 08:05

---end console----

Any clues?
Davide