As of now, we know that initramfs has bash built in, and we have used it from time to time through rd.break hooks. This chapter’s aim is to understand how systemd provides us with a shell inside an initramfs. What are the steps that have to be followed, and how can one use it more effectively? But before that, let’s recap what we have learned so far about the debugging and emergency shells of initramfs.
The Shell
rd.break
drop to a shell at the end
rd.break
drops us inside initramfs, and we can explore the initramfs environment through it. This initramfs environment is also called the emergency mode ...
