You may notice that your system drive runs out of space when using WSL-Distibutions. So you might ask how to move these stuff to another hard drive or get some space back from your precious drive. Warning: Some commands here might be destructive - I take no responsibilities for any lost data. Read, understand and then decide to follow instructions or not.
https://superuser.com/questions/1606213/how-do-i-get-back-unused-disk-space-from-ubuntu-on-wsl2
The Problem: WSL will dynamically grow the virtual disk (ext4.vhdx) but never shrink it to reclaim unused space. (See also