Ok,
- Unraid GUI under Settings -> Disk Settings -> Enable Auto Start = NO
- Reboot the server
- Unraid will come back up, but the array will be offline still
- Console/SSH into it and run:
nano /etc/rc.d/rc.Plexmediaserver
- Press CTRL-W (which will do a search) and type without quotes "app_make_dirs" and press enter
- That will take you to the spot in the script where we need to be, add a new line above that app_make_dirs command, and type without quotes "sleep 10"
- Press CTRL-X, it will ask if you want to save, press Y and enter again to save with the same name
- Start your array
Then once the array has started, try the plex server to see if you get the welcome screen or if it shows your content. If you mess up any of the steps above, a reboot will revert any changes you may have made. If when you start it this time, then we know a delay will resolve the issue but if you see the welcome screen again, then it's something else.