diff --git a/documentation/dev-manual/start.rst b/documentation/dev-manual/start.rst
index e10367752..803ea2601 100644
--- a/documentation/dev-manual/start.rst
+++ b/documentation/dev-manual/start.rst
@@ -554,6 +554,7 @@ your Yocto Project build host:
          DISKPART> select vdisk file="<path_to_VHDX_file>"
          DISKPART> attach vdisk readonly
          DISKPART> compact vdisk
+         DISKPART> detach
          DISKPART> exit
 
 .. note::