diff --git a/source/menu_os.h b/source/menu_os.h
index 231e4e4..dfda82a 100644
--- a/source/menu_os.h
+++ b/source/menu_os.h
@@ -13,7 +13,7 @@ private:
     Glib::RefPtr<Gtk::Builder> builder;
     vector<tuple<string, vector<string>>> vec_list_os;
     
-    Gtk::Window *popoverMenuOS;
+    Gtk::Popover *popoverMenuOS;
     Gtk::Revealer *revealerL1;
     Gtk::Revealer *revealerL2;
     Gtk::Button *btnToLev1;
diff --git a/ubl-settings-bootloader.glade b/ubl-settings-bootloader.glade
index 7147009..52146b6 100644
--- a/ubl-settings-bootloader.glade
+++ b/ubl-settings-bootloader.glade
@@ -1599,99 +1599,10 @@
       <widget name="treeViewOTT"/>
     </widgets>
   </object>
-  <object class="GtkWindow" id="mess_sudo">
-    <property name="can-focus">False</property>
-    <property name="title" translatable="yes">Внимание!</property>
-    <property name="window-position">center</property>
-    <property name="type-hint">dialog</property>
-    <child>
-      <object class="GtkBox">
-        <property name="visible">True</property>
-        <property name="can-focus">False</property>
-        <property name="orientation">vertical</property>
-        <child>
-          <object class="GtkBox">
-            <property name="visible">True</property>
-            <property name="can-focus">False</property>
-            <property name="margin-left">5</property>
-            <property name="margin-right">5</property>
-            <property name="margin-start">5</property>
-            <property name="margin-end">5</property>
-            <child>
-              <object class="GtkImage">
-                <property name="visible">True</property>
-                <property name="can-focus">False</property>
-                <property name="margin-left">5</property>
-                <property name="margin-right">5</property>
-                <property name="margin-start">5</property>
-                <property name="margin-end">5</property>
-                <property name="margin-top">5</property>
-                <property name="margin-bottom">5</property>
-                <property name="pixel-size">50</property>
-                <property name="icon-name">gtk-dialog-warning</property>
-              </object>
-              <packing>
-                <property name="expand">True</property>
-                <property name="fill">True</property>
-                <property name="position">0</property>
-              </packing>
-            </child>
-            <child>
-              <object class="GtkLabel" id="lblMessageSudo">
-                <property name="width-request">160</property>
-                <property name="visible">True</property>
-                <property name="can-focus">False</property>
-                <property name="halign">start</property>
-                <property name="valign">center</property>
-                <property name="margin-left">5</property>
-                <property name="margin-right">5</property>
-                <property name="margin-start">5</property>
-                <property name="margin-end">5</property>
-                <property name="margin-top">5</property>
-                <property name="margin-bottom">5</property>
-                <property name="label" translatable="yes">Warning!</property>
-              </object>
-              <packing>
-                <property name="expand">True</property>
-                <property name="fill">True</property>
-                <property name="position">1</property>
-              </packing>
-            </child>
-          </object>
-          <packing>
-            <property name="expand">False</property>
-            <property name="fill">True</property>
-            <property name="position">1</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="btnMessCloseSudo">
-            <property name="label" translatable="yes">OK</property>
-            <property name="visible">True</property>
-            <property name="can-focus">True</property>
-            <property name="receives-default">True</property>
-            <property name="margin-left">5</property>
-            <property name="margin-right">5</property>
-            <property name="margin-start">5</property>
-            <property name="margin-end">5</property>
-            <property name="margin-top">3</property>
-            <property name="margin-bottom">3</property>
-          </object>
-          <packing>
-            <property name="expand">False</property>
-            <property name="fill">True</property>
-            <property name="position">1</property>
-          </packing>
-        </child>
-      </object>
-    </child>
-  </object>
-  <object class="GtkWindow" id="popoverMenuOS">
+  <object class="GtkPopover" id="popoverMenuOS">
     <property name="can-focus">False</property>
-    <property name="hexpand">True</property>
-    <property name="vexpand">True</property>
-    <property name="resizable">False</property>
-    <property name="icon-name">com.ublinux.ubl-settings-datetime</property>
+    <property name="relative-to">btnOpenMenuOS1</property>
+    <property name="position">bottom</property>
     <child>
       <object class="GtkBox">
         <property name="visible">True</property>
@@ -1790,26 +1701,90 @@
         </child>
       </object>
     </child>
-    <child type="titlebar">
-      <object class="GtkHeaderBar">
+  </object>
+  <object class="GtkWindow" id="mess_sudo">
+    <property name="can-focus">False</property>
+    <property name="title" translatable="yes">Внимание!</property>
+    <property name="window-position">center</property>
+    <property name="type-hint">dialog</property>
+    <child>
+      <object class="GtkBox">
         <property name="visible">True</property>
         <property name="can-focus">False</property>
-        <property name="show-close-button">True</property>
-        <child type="title">
-          <object class="GtkLabel" id="lblHeadeWndWeb1">
+        <property name="orientation">vertical</property>
+        <child>
+          <object class="GtkBox">
             <property name="visible">True</property>
             <property name="can-focus">False</property>
-            <property name="label" translatable="yes">ubl-settings-bootloader</property>
+            <property name="margin-left">5</property>
+            <property name="margin-right">5</property>
+            <property name="margin-start">5</property>
+            <property name="margin-end">5</property>
+            <child>
+              <object class="GtkImage">
+                <property name="visible">True</property>
+                <property name="can-focus">False</property>
+                <property name="margin-left">5</property>
+                <property name="margin-right">5</property>
+                <property name="margin-start">5</property>
+                <property name="margin-end">5</property>
+                <property name="margin-top">5</property>
+                <property name="margin-bottom">5</property>
+                <property name="pixel-size">50</property>
+                <property name="icon-name">gtk-dialog-warning</property>
+              </object>
+              <packing>
+                <property name="expand">True</property>
+                <property name="fill">True</property>
+                <property name="position">0</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkLabel" id="lblMessageSudo">
+                <property name="width-request">160</property>
+                <property name="visible">True</property>
+                <property name="can-focus">False</property>
+                <property name="halign">start</property>
+                <property name="valign">center</property>
+                <property name="margin-left">5</property>
+                <property name="margin-right">5</property>
+                <property name="margin-start">5</property>
+                <property name="margin-end">5</property>
+                <property name="margin-top">5</property>
+                <property name="margin-bottom">5</property>
+                <property name="label" translatable="yes">Warning!</property>
+              </object>
+              <packing>
+                <property name="expand">True</property>
+                <property name="fill">True</property>
+                <property name="position">1</property>
+              </packing>
+            </child>
           </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">True</property>
+            <property name="position">1</property>
+          </packing>
         </child>
         <child>
-          <object class="GtkImage">
+          <object class="GtkButton" id="btnMessCloseSudo">
+            <property name="label" translatable="yes">OK</property>
             <property name="visible">True</property>
-            <property name="can-focus">False</property>
-            <property name="pixel-size">32</property>
-            <property name="icon-name">com.ublinux.ubl-settings-bootloader</property>
-            <property name="icon_size">5</property>
+            <property name="can-focus">True</property>
+            <property name="receives-default">True</property>
+            <property name="margin-left">5</property>
+            <property name="margin-right">5</property>
+            <property name="margin-start">5</property>
+            <property name="margin-end">5</property>
+            <property name="margin-top">3</property>
+            <property name="margin-bottom">3</property>
           </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">True</property>
+            <property name="position">1</property>
+          </packing>
         </child>
       </object>
     </child>