"I am running Sorcerer, which does not provide a mkinitrd script. I want to _understand_ the initrd process and build my own mkinitrd script. Does anyone know (I have googled my heart
out) where I can find a detailed description of the mkinitrd/initrd process so I can make my own mkinitrd script."
I suggest that you download the mkinitrd script from one of the distributions that has mkinitrd. Use that script as a pattern to create your own mkinitrd script for Sorcerer.
Be prepared. Create a LifeBoat CD.