# Editor.SceneEditorSession.IsMounted

```csharp
bool IsMounted { get; set; }
```

True if this session is editing a scene opened from a mount. Mounted scenes live at a
read-only mount:// path, so they can't be saved and never report unsaved changes.

Declared in [Editor.SceneEditorSession](/api/Editor.SceneEditorSession).
Assembly: `Sandbox.Tools`.