resize vmdk/vdi virtualbox

When using VirtualBox, you might come across situations when you need to resize the hard disk space.
The VM resize feature provided by VirtualBox only works for VDI & VHD and must be a dynamic drive.


Using VBoxManage clonehd you can convert the drive image from VMDK to VDI, and then use modifyd to change the virtual disk size. 


See Chapter 8.23 VBoxManage clonehd & then 8.22 VBoxManage modifyhd instructions in the reference.

References:
1. https://forums.virtualbox.org/viewtopic.php?f=3&t=46852
2. http://www.virtualbox.org/manual/ch08.html