mkinitrd in 11.0 is bad. How to install from 10.3?

Hello all

I have posted 2 posts having a boot problem and recieving error 23 etc.
I have discovered that mkinitrd is making this problem.

Is there a way to make fresh install of 11.0 and then install mkinitrd from 10.3?
(as a 1st thing I would do from a clean install of 11.0)