trimmtrabb
Participant
Post count: 480

Hi, yes roms need to be placed in the rom folders for the emulators to show up.

You have two options:

Enable the auto-copy feature via the setup script which will transfer roms from the usb drive to the relevant rom folders on your sd card:
https://github.com/retropie/RetroPie-Setup/wiki/How-to-get-ROMs-on-the-SD-card

Or modify es_systems.cfg to load roms from the usb drive:
http://mardell.me/blog/how-to-load-roms-from-a-usb-drive-on-retropie/

Hope this helps