diff --git a/0.VirtualBox.md b/0.VirtualBox.md
index 654a590..767cd01 100644
--- a/0.VirtualBox.md
+++ b/0.VirtualBox.md
@@ -70,8 +70,10 @@ VBoxManage import SlackDB.ova                    # import
 ## Split disk
 
 ```sh
-# firts detach and delete disk from VMachine
-vboxmanage clonemedium disk Rocky\ Linux.vdi output.vmdk --format VMDK --variant Split2G
+# detach and delete disk from vmachine
+vboxmanage clonemedium disk 'Rocky Linux.vdi' rocky_linux.vmdk --format VMDK --variant Split2G
+rm 'Rocky Linux.vdi'
+# attach new disk to vmachine
 ```
 
 ## Convert to KVM