log files only took up 800MB, but I fixed most of the problems now, by setting up pacman to put the cache in the home partition.

You are right, it was better to leave /home in the same partition, but now it is difficult to chance that. I thought it had advantages when something goes wrong with my root i can swap it out, but it only caused problems for me. Why do so many people split up there /home then? I thought it was common practice.

Yes, this did work! Thanks for your help!

To be clear, I have a home partition with over 300GB of free space left. Is there maybe a way to specify packages to be installed in my home partition instead of my root?

This realy helped my out. /var/cache/pacman took up over 5GB of space in my root partition. To prevent this from happening again, is there a way to move pacman cache to my home partition where I have over 300GB of space for pacman to consume?

Thanks! This realy helped me out. Saved 1GB on my root.

When I install things with pacman, is it storing files in the root partition? If so, can I specify installations to install inside the home partition?