Ok, how is this supposed to work? I have re-installed CentOS-7 over the first install. On the "Installation Destination" (JHC can they make these name any more pretentious? What happened to boot disk?) I have exactly one ATA WD5000. I chose 'I will configure partitioning'. On the Manual Partitioning page I see the previous installation file-system. I select each of the mount points and delete them using the (-) button (said metaphor also lifted directly from Apple OSX). This gives me the entire disk back. I then add mount points for /. /swap, /var/log, /tmp (probably unnecessarily but force of habit will out), and /var/spool (no users so no /home).

Now when I reboot I get nothing but a flashing underscore in the top left hand corner of the monitor. Nothing else.

What gives?