failures when installing on a system with an existing Rockstor install

[phillxnet]

It has been observed that when installing on a system that already has a Rocsktor install on another disk, the resulting installer will:

1: fail to run the JeOS first boot wizard (Locale, Keyboard Layout, License Agreement, Time Zone, 'root' user pass).
2: fail to start the Rockstor services as Postgresql is not auto started.

This looks to be caused by some systems reading their config from the already existing Rockstor install and thus failing to invoke themselves on the fresh install.

Fix: re-install with the offending prior Rockstor system drive removed, or wiped.