VirtualBox Cannot register the hard disk already exists : <p>I created a virtual disk file <em>VM_1_Ubuntu.vdi</em>. Then I moved it into another folder. I tried to update VM settings (right click on virtual machine -> settings -> Storage -> Controller SATA tab, <em>VM_1_Ubuntu.vdi</em> path). I wanted to set a new path.</p>

<p>It says
Cannot register the hard disk already exists</p>
