It is possible that the image uploaded is corrupted. Run into similar problems with Dell 390 & 790. Usually stops during deploying the largest partition. However it doesn’t happen consistently, nor at the same point. It has nothing to do with partition size, since larger partition size would deploy fine. Try upload the image again from the same host. I am guessing it has something to do with the way data are compressed. Will test image out without using compression & see if it makes any difference.