MicroSD Card not visible on boot in linux

I&rsquo;m still using my chromebook with coreboot as a portable thinclient. Due to small built-in storage (only 16GB), i&rsquo;m also using microSD card as a secondary storage for larger files and project. However i was strugeling with microSD card not being mounted at boot (waiting for device), my solution was to just physically eject and insert the card at boot, but it is pretty inconvient and…