diff --git a/vagrant.md b/vagrant.md
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--- a/vagrant.md
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@@ -1,5 +0,0 @@
-# Vagrant
-
-**Get guest ip**  
-`vagrant ssh -c "hostname -I | cut -d' ' -f2" 2>/dev/null`  
-https://coderwall.com/p/etzdmq/get-vagrant-box-guest-ip-from-host
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diff --git a/virtualbox-vagrant.md b/virtualbox-vagrant.md
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+# VirtualBox & Vagrant
+
+## Vagrant
+**Get guest ip**  
+`vagrant ssh -c "hostname -I | cut -d' ' -f2" 2>/dev/null`  
+https://coderwall.com/p/etzdmq/get-vagrant-box-guest-ip-from-host
+
+
+## VirtualBox
+UUID Already exists  
+http://www.groovypost.com/howto/virtualbox-error-uuid-hard-disk/  
+ 
+`vboxmanage.exe internalcommands sethduuid "D:\vdocs\vdisc\jenkins-0.001\box-disk1_2.vmdk"`  
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