diff --git a/src/views/system.js b/src/views/system.js
index 438588250..9805c515e 100644
--- a/src/views/system.js
+++ b/src/views/system.js
@@ -188,14 +188,14 @@ angular.module('Application').controller('SystemController', ['$scope', '$locati
                 // use collectd instead of df data so the timeframe matches with the du data
                 Client.graphs([
                     'absolute(collectd.localhost.df-' + diskName + '.df_complex-free)',
-                    'absolute(collectd.localhost.df-' + diskName + '.df_complex-reserved)',
+                    'absolute(collectd.localhost.df-' + diskName + '.df_complex-reserved)', // reserved for root (default: 5%) tune2fs -l/m
                     'absolute(collectd.localhost.df-' + diskName + '.df_complex-used)'
                 ], '-1min', {}, function (error, data) {
                     if (error) return $scope.setError('disk', error);
 
                     disk.size = data[2].datapoints[0][0] + data[1].datapoints[0][0] + data[0].datapoints[0][0];
                     disk.free = data[0].datapoints[0][0];
-                    disk.occupied = data[2].datapoints[0][0] + data[1].datapoints[0][0];
+                    disk.occupied = data[2].datapoints[0][0];
 
                     colorIndex = 0;
                     disk.contains.forEach(function (content) {
@@ -225,7 +225,7 @@ angular.module('Application').controller('SystemController', ['$scope', '$locati
 
                         if (index === 0) { // the root mount point is the first disk
                             disk.contains.push({
-                                label: 'Everything else (Ubuntu, Swap, ...)',
+                                label: 'Everything else (Ubuntu, Swap, etc)',
                                 id: 'other',
                                 color: '#27CE65',
                                 usage: usageOther