[CentOS] C7 install, "failed to IDENTIFY"

Tue Nov 27 18:05:24 UTC 2018
mark <m.roth at 5-cent.us>

The install from a USB key fails. It's showing ata2:0.0 failed to
IDENTIFY. I've been searching online, and the only hint I have is that it
might not understand the controller.

New Dell Optiplex 7050.

Haanyone run into this?