diff --git a/Nebula.Launcher/ViewModels/MainViewModel.cs b/Nebula.Launcher/ViewModels/MainViewModel.cs
index 4903dd1..36ff3ac 100644
--- a/Nebula.Launcher/ViewModels/MainViewModel.cs
+++ b/Nebula.Launcher/ViewModels/MainViewModel.cs
@@ -40,6 +40,7 @@ public partial class MainViewModel : ViewModelBase
     [GenerateProperty] private DebugService DebugService { get; } = default!;
     [GenerateProperty] private PopupMessageService PopupMessageService { get; } = default!;
     [GenerateProperty, DesignConstruct] private ViewHelperService ViewHelperService { get; } = default!;
+    [GenerateProperty] private FileService FileService { get; } = default!;
 
     public ObservableCollection<ListItemTemplate> Items { get; private set; }
 
@@ -56,6 +57,20 @@ public partial class MainViewModel : ViewModelBase
 
         PopupMessageService.OnPopupRequired += OnPopupRequired;
         PopupMessageService.OnCloseRequired += OnPopupCloseRequired;
+        
+        CheckMigration();
+    }
+
+    private void CheckMigration()
+    {
+        var loadingHandler = ViewHelperService.GetViewModel<LoadingContextViewModel>();
+        loadingHandler.LoadingName = "Migration task, please wait...";
+        loadingHandler.IsCancellable = false;
+
+        if (!FileService.CheckMigration(loadingHandler))
+            return;
+        
+        OnPopupRequired(loadingHandler);
     }
 
     partial void OnSelectedListItemChanged(ListItemTemplate? value)
diff --git a/Nebula.Launcher/ViewModels/Popup/LoadingContextViewModel.cs b/Nebula.Launcher/ViewModels/Popup/LoadingContextViewModel.cs
index 5cf5bdb..6e39aab 100644
--- a/Nebula.Launcher/ViewModels/Popup/LoadingContextViewModel.cs
+++ b/Nebula.Launcher/ViewModels/Popup/LoadingContextViewModel.cs
@@ -17,6 +17,7 @@ public sealed partial class LoadingContextViewModel : PopupViewModelBase, ILoadi
     [ObservableProperty] private int _resolvedJobs;
 
     public string LoadingName { get; set; } = "Loading...";
+    public bool IsCancellable { get; set; } = true;
     public override bool IsClosable => false;
 
     public override string Title => LoadingName;
@@ -42,6 +43,7 @@ public sealed partial class LoadingContextViewModel : PopupViewModelBase, ILoadi
     }
 
     public void Cancel(){
+        if(!IsCancellable) return;
         CancellationService.Cancel();
         Dispose();
     }
diff --git a/Nebula.Launcher/Views/Popup/LoadingContextView.axaml b/Nebula.Launcher/Views/Popup/LoadingContextView.axaml
index 644c382..4fee167 100644
--- a/Nebula.Launcher/Views/Popup/LoadingContextView.axaml
+++ b/Nebula.Launcher/Views/Popup/LoadingContextView.axaml
@@ -24,7 +24,11 @@
                 </Label>
             </StackPanel>
 
-            <Button HorizontalAlignment="Right" VerticalAlignment="Center" Command="{Binding Cancel}">
+            <Button 
+                HorizontalAlignment="Right" 
+                VerticalAlignment="Center" 
+                Command="{Binding Cancel}" 
+                IsVisible="{Binding IsCancellable}">
                 <Label>Cancel</Label>
             </Button>
         </Panel>
diff --git a/Nebula.Shared/Services/FileService.cs b/Nebula.Shared/Services/FileService.cs
index b3a8822..bcc9404 100644
--- a/Nebula.Shared/Services/FileService.cs
+++ b/Nebula.Shared/Services/FileService.cs
@@ -26,17 +26,46 @@ public class FileService
         EngineFileApi = CreateFileApi("engine");
         ManifestFileApi = CreateFileApi("manifest");
         ConfigurationApi = CreateFileApi("config");
+    }
 
-        // Some migrating think
-        foreach(var file in ContentFileApi.AllFiles){
-            if(file.Contains("\\") || !ContentFileApi.TryOpen(file, out var stream)) continue;
-            
-            ContentFileApi.Save(HashApi.GetManifestPath(file), stream);
-            stream.Dispose();
-            ContentFileApi.Remove(file);
+    public bool CheckMigration(ILoadingHandler loadingHandler)
+    {
+        _debugService.Log("Checking migration...");
+
+        var migrationList = ContentFileApi.AllFiles.Where(f => !f.Contains("\\")).ToList();
+        if(migrationList.Count == 0) return false;
+        
+        _debugService.Log($"Found {migrationList.Count} migration files. Starting migration...");
+        Task.Run(() => DoMigration(loadingHandler, migrationList));
+        return true;
+    }
+
+    private void DoMigration(ILoadingHandler loadingHandler, List<string> migrationList)
+    {
+        loadingHandler.SetJobsCount(migrationList.Count);
+        
+        Parallel.ForEach(migrationList, (f,_)=>MigrateFile(f,loadingHandler));
+        
+        if (loadingHandler is IDisposable disposable)
+        {
+            disposable.Dispose();
         }
     }
 
+    private void MigrateFile(string file, ILoadingHandler loadingHandler)
+    {
+        if(!ContentFileApi.TryOpen(file, out var stream))
+        {
+            loadingHandler.AppendResolvedJob();
+            return;
+        }
+            
+        ContentFileApi.Save(HashApi.GetManifestPath(file), stream);
+        stream.Dispose();
+        ContentFileApi.Remove(file);
+        loadingHandler.AppendResolvedJob();
+    }
+
     public IReadWriteFileApi CreateFileApi(string path)
     {
         return new FileApi(Path.Join(RootPath, path));
@@ -60,4 +89,66 @@ public class FileService
             throw;
         }
     }
+}
+
+public sealed class ConsoleLoadingHandler : ILoadingHandler
+{
+    private int _currJobs;
+
+    private float _percent;
+    private int _resolvedJobs;
+
+    public void SetJobsCount(int count)
+    {
+        _currJobs = count;
+
+        UpdatePercent();
+        Draw();
+    }
+
+    public int GetJobsCount()
+    {
+        return _currJobs;
+    }
+
+    public void SetResolvedJobsCount(int count)
+    {
+        _resolvedJobs = count;
+
+        UpdatePercent();
+        Draw();
+    }
+
+    public int GetResolvedJobsCount()
+    {
+        return _resolvedJobs;
+    }
+
+    private void UpdatePercent()
+    {
+        if (_currJobs == 0)
+        {
+            _percent = 0;
+            return;
+        }
+
+        if (_resolvedJobs > _currJobs) return;
+
+        _percent = _resolvedJobs / (float)_currJobs;
+    }
+
+    private void Draw()
+    {
+        var barCount = 10;
+        var fullCount = (int)(barCount * _percent);
+        var emptyCount = barCount - fullCount;
+
+        Console.Write("\r");
+
+        for (var i = 0; i < fullCount; i++) Console.Write("#");
+
+        for (var i = 0; i < emptyCount; i++) Console.Write(" ");
+
+        Console.Write($"\t {_resolvedJobs}/{_currJobs}");
+    }
 }
\ No newline at end of file