VBoxManage clonemedium disk aaaa.vmdk aaaa.vdi --format VDI
vboxmanage movevm "debian" --folder /home/...
vboxmanage setproperty machinefolder /path/to/directory/
VBoxManage unregistervm <uuid>|<name> [--delete]
vboxmanage setproperty machinefolder /path/to/directory/
VBoxManage modifyvm MachineName --nic2 bridged --bridgeadapter2 enp1s0 VBoxManage modifyvm MachineName --nic1 bridged --bridgeadapter1 ens4f0
use the VBoxManage command line interface as follows:
VBoxManage modifyvm "VM name" --firmware efiTo switch back to using the BIOS:
VBoxManage modifyvm "VM name" --firmware bios