Copy files from NAS to GParted machine via samba?

Hi, Linux newbee here.  I want to use GParted on a machine to remove existing partitions, then create four new partitions for the installation of Windows, Swap, Debian, and Data.  So far, so good.

Then, while still running in the GParted Live environment, with no OS yet installed on the machine, I want to copy a large number of files from a NAS on the local network to which the machine is connected, to the Data partition, presumably using samba.  How can I do this?