Seth,
I just got a batch of Dell Precision T3500’s and had some issues with uploading. I’m running FOG version 0.30. First issue was my T3500’s have dual video cards and the one card caused a driver issue with FOG’s inventory boot up. I removed the card and it allowed me to do the full host inventory. The second issue I had was it would upload the first two partitions and get 20% into the third partition and fail out. I read your post about changing the drive setting. This reminded me about a similiar issue with a Dell Latitude laptop at a previous job with FOG. We had to change the drive setting to ATA from AHCI and then rebuild the image.
I changed the drive setting to ATA on my T3500 and reinstalled Windows 7 and ran FOG prep. The image uploaded fine. I just deployed it to one of the other T3500’s and it worked fine.
Thanks for the memory jog and hope this helps with your T3500.
Brian