Examples (3)
Unregister an existing VM
VBoxManage unregistervm uuid|vm_nameDelete hard disk image files, all saved state files, VM logs, and XML VM machine files
VBoxManage unregistervm uuid|vm_name --deleteDelete all files from the VM
VBoxManage unregistervm uuid|vm_name --delete-allmade by @shridhargupta | data from tldr-pages