What does systemd-boot and initramfs do? And how much space does they take?
First of all, when i said kernel i mean the compressed kernel image (vmlinuz).
So these two files are used to boot your system, each opearting system using sysmted-boot should have a copy of these two files on the ESP for each kernel version that they use [please someone correct me if i'm wrong].
Just to get an overall ideia of how much space does it take, my stretch system would use about 20MB for storing both files for one kernel version.
Samuel Henrique O. P. [samueloph] Técnico em Informática - UTFPR [2012]. Estudante de Engenharia de Computação - UTFPR.