xubuntu@xubuntu:~$ sudo VBoxManage internalcommands createrawvmdk -filename ~/rawhd.vmdk -rawdisk /dev/nvme0n1
VBoxManage: error: VMDK: could not create new file '/home/xubuntu/rawhd.vmdk'
VBoxManage: error: Error code VERR_ALREADY_EXISTS at /home/vbox/vbox-5.2.8/src/VBox/Storage/VMDK.cpp(3392) in function int vmdkCreateRawImage(PVMDKIMAGE, PVDISKRAW, uint64_t)
VBoxManage: error: Cannot create the raw disk VMDK: VERR_ALREADY_EXISTS
VBoxManage: error: The raw disk vmdk file was not created