How to convert a VMware virtual disk to VirtualBox disk

Context

• On my workstation running a VirtualBox machine with a VMDK (VMware virtual disk) failed.
• I tried again by converting the VMDK into a VDI (VirtualBox virtual disk)

Steps

Derived from http://smallbusiness.chron.com/copying-vmdk-vdi-virtualbox-43658.html

• C:\Program Files\Oracle\VirtualBox>VBoxManage clonehd "D:\VMware\reference-box.vmdk" "D:\VirtualBox\converted.vdi" --format VDI
• Create a new virtual machine in VirtualBox
• Add hard disk with the converted.vdi
• Install the VirtualBox Guest Additions on the virtual machine