There's a great tutorial on WeGotServed for owners of the HP MediaSmart Server who want to upgrade it to WS 2012 Essentials.
We are shown how to make up a VGA cable so we can access the bios on the MediaSmart Server, and then taken through the process of installing WS 2012 Essentials onto the box:
Overall my whole journey from Windows Home Server v1 to Windows Server 2012 Essentials with the HP EX470 has been joyful. Now don't get me wrong, it has been emotional - having to quickly learn how to make the infamous VGA cable, hurting my fingers during the assembly and spending a good while trying to figure out why the EX470 wouldn't boot from the USB thumb drive. But the end results are incredible. Let me say that with 2GB RAM and a dual core CPU, Windows Server 2012 Essentials runs beautifully.
You can find this tutorial for HP MediaSmart owners here.
Installing WS2012 Essentials on the HP MediaSmart Server is a post from: MS Windows Home Server - Your Personal Guide to Microsoft Windows Home Server!
Microsoft MVP Philip Churchill's MS Windows Home Server Blog is one of the leading sources of breaking news and information, insightful opinion, and great tutorials regarding Windows Home Server. If you're an HP MediaSmart Server owner, this is a can't miss!