How to mount VirtualBox drive image (vdi) in Ubuntu 12.10/12.04

If you want to mount VirtualBox drive image (vdi) in Ubuntu 12.04/12.10 use vdfuse.This Fuse module uses the VirtualBox access library to open a VirtualBox supported VD image file and mount it as a Fuse file system. The mount point contains a flat directory containing the files EntireDisk, Partition1 .. PartitionN. These can then be loop mounted to access the underlying file systems.