vagrant ssh-config
VBoxManage clonehd "ubuntu-bionic-18.04-cloudimg.vmdk" "hdd.vdi" --format vdi VBoxManage modifyhd "hdd.vdi" --resize 102400 # remove all other disk for the instance, and add hdd.vdi # now vagrant up sudo cfidsk /dev/sda # remove /dev/sda2 if exists and expand sda1 to max sudo resize2fs /dev/sda1