Solved. After eliminating one item after another, and initially only looking at the NIC, I went ahead and removed the DMS card. Wouldn’t you know it, no longer the rEFInd error and they went on to image. Thanks for everyone’s suggestions. This goes to show that some errors are not really related to what they appear to. 40 + machines saved from surplus.

@quinniedid @Sebastian-Roth - We’ve tried your suggestions and so far no luck. Need to dig deeper into the BIOS and see if I’m missing something there. Turned off legacy and secure boot. Not much else in there that looks related, but who knows. Thanks for your input.

@quinniedid sorry, left an important piece of the puzzle out, we are on 1.5.7.

We’ve been successfully imaging on all kinds of different models, but this particular one comes to a halt with the rEFInd screen. Doing some research we went from version 0.11.0 to 0.8.3 with the same result. We are open to any suggestions at this point as we have quite a large number of this model.