This video blog runs about 8 and a half minutes and focuses on the process to create a Virtual Hard Disk in Hyper-V which can then be assigned to a Virtual Machine. This demonstration completes the creation process for each of the primary types of disk in Hyper-V including Dynamically Expanding, Fixed Size, and Differencing virtual hard disks.
This content is roughly level 100.
http://tfc.wanderson.org/Creating_a_Virtual_Hard_Disk_in_HyperV/Creating_a_Virtual_Hard_Disk_in_HyperV.htm
Falconic note: Community Server, the software upon which this blog is hosted, currently is configured to remove embedded media from blog posts. You will need to click the link above to view the video blog.