If you are using VirtualBox, then it is not too difficult to take a VDI and use it anywhere. Here's how:

• copy your .vdi file to a directory where VirtualBox will be able to access it


• run VirtualBox and create a new virtual machine


• choose Ubuntu Linux as the operating system and click "Next"


• under the "Virtual Hard Disk" option, choose "Use existing hard disk". This will open the "Virtual Media Manager".


• in the Virtual Media Manager, click the "Add" button and select the .vdi file that you copied, then click "Next"


• configure the rest of the virtual machine as you would like it to be


• start the virtual machine

So long as the .vdi file has not been corrupted, it will work just fine.