Use asynchronous device revert.

src/modules/partition/gui/ChoicePage.cpp

@@ -273,7 +273,6 @@ ChoicePage::setupChoices()
         if ( currd )
         {
             applyActionChoice( currentChoice() );
-            updateActionChoicePreview( currentChoice() );
         }
     } );
 }
@@ -437,27 +436,33 @@ ChoicePage::applyActionChoice( ChoicePage::Choice choice )
         connect( m_beforePartitionBarsView->selectionModel(), &QItemSelectionModel::currentRowChanged,
                  this, [ this ]( const QModelIndex& current, const QModelIndex& previous )
         {
+            auto doReplace = [=]
+            {
+                // We can't use the PartitionPtrRole because we need to make changes to the
+                // main DeviceModel, not the immutable copy.
+                QString partPath = current.data( PartitionModel::PartitionPathRole ).toString();
+                Partition* partition = KPMHelpers::findPartitionByPath( { selectedDevice() },
+                                                                        partPath );
+                if ( partition )
+                    PartitionActions::doReplacePartition( m_core,
+                                                          selectedDevice(),
+                                                          partition );
+            };
+
             if ( m_core->isDirty() )
             {
-                m_core->revertDevice( selectedDevice() );
+                m_core->asyncRevertDevice( selectedDevice(), doReplace );
                 m_core->clearJobs();
             }
-
-            // We can't use the PartitionPtrRole because we need to make changes to the
-            // main DeviceModel, not the immutable copy.
-            QString partPath = current.data( PartitionModel::PartitionPathRole ).toString();
-            Partition* partition = KPMHelpers::findPartitionByPath( { selectedDevice() },
-                                                                    partPath );
-            if ( partition )
-                PartitionActions::doReplacePartition( m_core,
-                                                      selectedDevice(),
-                                                      partition );
+            else
+                doReplace();
         } );
         break;
     case NoChoice:
     case Manual:
         break;
     }
+    updateActionChoicePreview( currentChoice() );
 }