diff --git a/docs/tutorial-extras/4-diskmount.md b/docs/tutorial-extras/4-diskmount.md
index 1006d86..09e31c6 100644
--- a/docs/tutorial-extras/4-diskmount.md
+++ b/docs/tutorial-extras/4-diskmount.md
@@ -71,4 +71,5 @@ automount -a
 ```
 系统会将你的磁盘自动挂载到 ```/mnt/sda1``` 或者 ```/mnt/mmcblk1p1```
 
+![sdx](img/mounted.png)  
 
diff --git a/docs/tutorial-extras/img/mounted.png b/docs/tutorial-extras/img/mounted.png
new file mode 100644
index 0000000..77d2bdd
Binary files /dev/null and b/docs/tutorial-extras/img/mounted.png differ