This is a rather small video. Showing you how to convert the Generation-1 VHD file to Convert it to the Generation-2 VHDX. I am sure everyone knows this already but still theres requests to post it, so here it is.
YouTube Video Link: https://www.youtube.com/watch?v=0VyNzTqOvlc
please install flash
There are also other ways to convert the VHD file to a VHDX format to get the benefits out of a Generation-2 capabilities, you can use the PowerShell to issue the following command which will do the same thing.
For further reading use the link to Convert VHD: http://technet.microsoft.com/en-us/library/hh848454.aspx