RHEL rescue mode via PXE boot

[wolf2k5 <wolf2k5 gmail com>]

Hi,

I can start RHEL 3 or 4 in rescue mode from the first installation CD
by typing 'linux rescue' at the boot prompt.

Is there any way to start RHEL in rescue mode via PXE boot?

I boot RHEL via PXE for new installation, that works fine.

But I am not able to boot it in rescue mode via PXE, since there is no
boot prompt to typy 'linux rescue'.

Thanks.