initramfs

Initramfs (initial RAM filesystem) is a temporary, minimal environment loaded into a computer's memory during startup. It supplies essential drivers and tools needed to initialize hardware and prepare the system for the main operating system. Think of it as a quick-start package that helps the computer get its core components ready before fullybooting into its full software environment. Once its job is done, initramfs hands control over to the main system, which continues to load and operate normally.