diff --git a/src/freedombone-installer b/src/freedombone-installer
index 9bcc7ebf15c2bc25455156135aa61ae4a0f174ec..7fdc5e24de6cd2b7aeb5da1509e8499ab8957e85 100755
--- a/src/freedombone-installer
+++ b/src/freedombone-installer
@@ -1517,9 +1517,10 @@ function update_system_monitor {
                 test_drive=
             fi
         fi
+        disk_io_speed=20
+        disk_io_speed_percent=10
         if [ "$test_drive" ]; then
-            disk_io_speed_percent=0
-            disk_io_speed=$(hdparm -t $test_drive | awk -F '= ' '{print $2}' | awk -F ' ' '{print $1}')
+            disk_io_speed=$(hdparm -t $test_drive | awk -F '= ' '{print $2}' | awk -F ' ' '{print $1}' | tail -n 1 | awk -F '.' '{print $1}')
             if [ "$disk_io_speed" ]; then
                 disk_io_speed_percent=$((disk_io_speed * 100 / 500))
                 if [ $disk_io_speed_percent -gt 100 ]; then
diff --git a/src/freedombone-utils-webadmin b/src/freedombone-utils-webadmin
index bf2f167bfa46ec7b163101b98b4318bc805a0cba..47ff1b95fc018ce7ca1ba206cd6d3202b1a820d2 100755
--- a/src/freedombone-utils-webadmin
+++ b/src/freedombone-utils-webadmin
@@ -766,9 +766,10 @@ function webadmin_update_system_monitor {
             test_drive=
         fi
     fi
+    disk_io_speed=20
+    disk_io_speed_percent=10
     if [ "$test_drive" ]; then
-        disk_io_speed_percent=0
-        disk_io_speed=$(hdparm -t $test_drive | awk -F '= ' '{print $2}' | awk -F ' ' '{print $1}')
+        disk_io_speed=$(hdparm -t $test_drive | awk -F '= ' '{print $2}' | awk -F ' ' '{print $1}' | tail -n 1 | awk -F '.' '{print $1}')
         if [ "$disk_io_speed" ]; then
             disk_io_speed_percent=$((disk_io_speed * 100 / 500))
             if [ $disk_io_speed_percent -gt 100 ]; then