diff --git a/system_partition_size.sh b/system_partition_size.sh
new file mode 100644
index 0000000..074d6e5
--- /dev/null
+++ b/system_partition_size.sh
@@ -0,0 +1,20 @@
+#/bin/bash
+
+echo -e "\nCheck the 'Size, Used, Avail and Use%'\n"
+echo "--------------------------------------------------------"
+echo "Filesystem              Size  Used Avail Use% Mounted on"
+echo "--------------------------------------------------------"
+df -h | grep '/dev/md0'
+
+echo -e "\n\nCheck which folder is using all the space:"
+for volume in /volume*; do
+    set -- "$@" "--exclude=${volume:1}"
+done
+echo -e "\n-------------------------"
+echo "Size    Folder"
+echo "-------------------------"
+du -hd 1 "$@" 2>/dev/null
+echo -e "\nThe last line is the total space used."
+echo "It is normal for /usr to be around 1GB."
+echo "/root should be no more than a few MB."
+