In this lecture we will build step-by-step a PXE (network boot) loaded skeleton linux system. This will provide an example on how to build Linux (almost) from scratch and provide an x-ray of a typical initrd. Applications? Diskless linux and music player machine in the shower are just two...
What is initrd - man 4 initrd and a nice summary
Adventure_in_PXE_Land.sxi - lecture slides in openoffice format