$ VBoxManage list vms
"virtualMachine" {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
$ vi .vagrant/machines/default/virtualbox/id
xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
$ VBoxManage list vms
"virtualMachine" {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
$ vi .vagrant/machines/default/virtualbox/id
xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx