Boot Naked Linux

I went down this road recently, and it's fun but also tedious. It can be useful to run a system completely from RAM when storage is unreliable. I did this with Raspberry Pi, because I've had SD-cards fail on me before.

One detail I remember is that you seem to also need a /dev/console node on the initrd or it fails to boot. Not sure if automounted devtmpfs solves that.

In the end I managed to squeeze a full glibc + systemd + libdrm + mesa stack in less than 64MB.