I have the iso on a usb that I booted up. When I get to the detect disc section, it prompts me that I have "More than one storage device has been detected". When I hit continue, it goes to the next section, Partition disks. That gives me a notification that "No root file system is defined". I have the USB installer plugged in and my primary HDD that I want to install on. The HDD showed up in the BIOS before I started the install to select boot from USB. I have dug around, but cant seem to find the right answer. Any idea what I need to do?