initrd in embedded systems

On 7 Sep 2016, at 12:42, Madhu K wrote:

I have one doubt, does all embedded system with Linux as operating system
have initrd?

It depends, but many of them do not. (In fact, I?ve not seen any that do
use an initrd, but that doesn?t mean they don?t exist.)

As the hardware is known the required drivers are built in to the kernel
directly.

Regards,
Kristof