2013-08-22 15:56 JST
To boot into recovery mode, shutdown your VM and then power it back on. Inside the hypervisor console for the VM, hold shift down while it boots. This will take you to the GRUB menu where you can choose to boot into recovery mode. Once at the recovery mode menu, choose the "remount" option and then press return again. After that, choose the "netroot" option. This will drop you at a root prompt.