While using Microsoft Deployment Toolkit (MDT) 2013 Update 2, you may encounter a situation where the computer will not image if the BIOS is configured in the UEFI mode despite having the UEFI option selected in MDT 2013.
The logs indicate an error of "UEFI=false,"
Research has determined this is occurring because the "Format and Partition Disk (UEFI)" property is not working correctly.
Microsoft Deployment Toolkit (MDT) 2013 Update 2 requires a manual edit to the formatting script in order to image through UEFI. Follow the steps below (Figure 1).
Figure 1