diff --git a/writemostly_debug.sh b/writemostly_debug.sh
new file mode 100644
index 0000000..914819e
--- /dev/null
+++ b/writemostly_debug.sh
@@ -0,0 +1,47 @@
+#/bin/bash
+
+    # Get array of internal drives
+    readarray -t internal_drives < <(synodisk --enum -t internal | grep 'Disk path' | cut -d"/" -f3)
+
+        echo "internal_drives: ${internal_drives[@]}"  # debug ################
+        echo "internal_drives_qty: ${#internal_drives[@]}"  # debug ###########
+
+        # Get list of internal HDDs and qty of SSDs
+        internal_ssd_qty="0"
+        for idrive in "${internal_drives[@]}"; do
+
+            echo "idrive: $idrive"  # debug ###################################
+
+#            internal_drive="$(echo "$idrive" | awk '{printf $4}')"
+
+#            echo "internal_drive: $internal_drive"  # debug ###################
+
+            #if synodisk --isssd "$internal_drive" >/dev/null; then
+#            if synodisk --isssd /dev/"${internal_drive:?}" >/dev/null; then
+            if synodisk --isssd /dev/"${idrive:?}" >/dev/null; then
+                # exit code 0 = is not SSD
+                # exit code 1 = is SSD
+
+                # Add internal HDDs to array
+                internal_hdds+=("$idrive")
+            else
+                # Count number of internal 2.5 inch SSDs
+                internal_ssd_qty=$((internal_ssd_qty +1))
+            fi
+        done
+
+        echo "internal_ssd_qty: $internal_ssd_qty"  # debug ###################
+        echo "internal_hdd_qty: ${#internal_hdds[@]}"  # debug ################
+        echo "internal_hdds: ${internal_hdds[@]}"  # debug ####################
+
+        # Set HDDs to writemostly if there's also internal SSDs
+        if [[ $internal_ssd_qty -gt "0" ]] && [[ ${#internal_hdds[@]} -gt "0" ]]; then
+            # There are internal SSDs and HDDs
+            echo -e "\nSetting internal HDDs state to write_mostly:"
+            for idrive in "${internal_hdds[@]}"; do
+
+                echo "set_writemostly writemostly $idrive"  # debug ###########
+
+            done
+        fi
+