[Assist] Parabola installation problem from disc image!

[Nachis]

I was trying to install parabola from the core disc image I downloaded 
from the website.
While in the installation menu [1] Select Source; I selected CD source 
for installation because I am mostly offline and It showed a message 
"/src/core/pkg is missing"
So does that mean the disc image has no packages and  I will have to be 
connected to internet and use net installation?