The VirtEngine Console (UI - Nilavu) is the main way to launch and manage virtual machines. A command line facility will be issued in our future launch.
Enter VirtEngine Console (UI - nilavu) by typing https://localhost in the browser.
Replace localhost with your ip
Watch this animation
Go to Dashboard
Click on the virtual machine that was just launched.
This will open the management page.
Click Disks tab
Attach Disk and type the expandable size for your VM in MB.
Connect to your VM and verify if the disk was added.
Here we find that
10GB of storage expanded in the VM.
Enjoy the extra space you have :).