When you say you did a full install - did you copy your data elsewhere, or not have much on there before you upgraded? I haven't entered a trial key either, just have the 30 day trial period before activation is required.
I had a lot of data, but then again I had even more storage space.
![Big Grin :D :D](/styles/default/xenforo/vbSmilies/Normal/biggrin.gif)
While I was trying WHS, I still had my other backup systems in operation. After I was satisfied with my WHS trial, I rebuilt my system and did a fresh install.