@byu13 It’s interesting it doesn’t print out more details when it fails on the sgdisk call. I though I had added some more debug output especially for this case as we get this every now and then… Maybe it’s just further up the screen. Anyhow.
Please schedule another deploy task for this machine but make sure you enable the checkbox for debug just before you hit the create task button. Boot the host, hit ENTER twice to get to the shell and start deploying using the command fog. Step through till you hit the error again which should bring you back to the command shell. Then run this manually: sgdisk -gl /images/Windows10_SysPrep/d1.mbr /dev/sda, take a picture of the screen and post here.
With that partition layout your destination disk needs to be at least 477 GB (last-lba: 1000215182 * 512 byte sector size / 1024 / 1024 / 1024)!