/root 파티션이 가득 찼습니다.

최근 내 EndeavourOS 설치에서 내 루트 파일 시스템이 꽉 차서 0MiB가 남았다는 알림을 보냈습니다. 루트 시스템을 정리하려면 어떻게 해야 합니까?

출력 sudo du -h --max-depth=1:

9,8G    ./usr
125M    ./boot
50M ./root
0   ./dev
du: cannot access './proc/3667/task/3667/fd/4': No such file or directory
du: cannot access './proc/3667/task/3667/fdinfo/4': No such file or directory
du: cannot access './proc/3667/fd/3': No such file or directory
du: cannot access './proc/3667/fdinfo/3': No such file or directory
0   ./proc
16K ./lost+found
24K ./tmp
229G    ./home
0   ./sys
293M    ./opt
27M ./etc
8,0G    ./var
12G ./run
12K ./srv
4,0K    ./mnt
259G    .

출력 df -h:

Filesystem      Size  Used Avail Use% Mounted on
dev             7,6G     0  7,6G   0% /dev
run             7,6G  1,7M  7,6G   1% /run
/dev/nvme0n1p2   20G   19G     0 100% /
tmpfs           7,6G   71M  7,5G   1% /dev/shm
tmpfs           7,6G  1,5M  7,6G   1% /tmp
/dev/nvme0n1p4  500M  324K  499M   1% /boot/efi
/dev/nvme0n1p3  259G  229G   17G  94% /home
tmpfs           1,6G   92K  1,6G   1% /run/user/1000
/dev/mmcblk0p1   15G   12G  3,4G  78% /run/media/dion/_________
/dev/nvme0n1p1   17G   24K   16G   1% /run/media/dion/71f8f1fe-5a7d-433f-aa03-84b679c7e2d9