While this doesn’t appear to be a FOG problem I did a quick google-fu search (as I’m sure you did).
I did find this article. https://forum.acronis.com/forum/70905#comment-252812
Can you confirm that post deployment the dell utility partition is marked as active as listed in the above post?
As always, its helpful to know what OS you are trying to deploy and what version of FOG you are running (the numbers in the cloud on the FOG management page will tell us a bit more than just 1.2.0 or such)