Initramfs and Initrd Series: Part 1 – Decompress and compress initramfs images
We will learn how to decompress and then re-compress an initramfs image from your Debian or Ubuntu systems. I find the whole initramfs and initrd topic to be one of the most fascinating one in Linux. More
Think of initramfs as a temporary “root” file system that gets loaded into your system’s memory (RAM) and this filesystem is responsible for finding and loading your real “root” filesystem either from your hard drive, network (nfs), RAID, LVM, etc.