This book is an exploration of the Linux Kernel. The first part of the book is a guide for you on how to work with the Initial RAM Disk (initrd). This simply provides us with an easy way to load the RAM disk using the boot loader. The necessary steps which can help you achieve this, and the necessary tools for you have been discussed. The tools which can be used for kernel development are discussed in this book. The first tool discussed in this book is the kcov. The book guides you on how to get started with this tool for the purpose of kernel development to the final stages. The coccinelle, which is a tool for kernel development is also examined in this book. This is a good tool which can help you in pattern matching and in the transformation of text. You are guided on how to install this tool and then how to use it for the purpose of kernel development. Lastly, the book guides you on how to write or create the Linux kernel modules. This means that you will learn how to create modules for the Linux kernel on your own. The following topics are discussed in this book:- Initial RAM Disk (initrd)- Kernel Development Tools- Writing Linux Kernel Modules