How to work with SD card partition?

[Happyhaha2000]

Did you set the country for the WiFi?
If not : https://github.com/RetroPie/RetroPie-Setup/wiki/Wifi
'raspi-config' can be found in Retropie menu.
If this doesn't work, a possibility is a false contact on Compute Module.
I think Flavor did post a "how to" video about this but I don't know where it is on the forum :S

I've set the country and time zone, and I still get the "No Wlan0 interface detected" when I try to set up WiFi. I know that the Wifi works, because I'm using my computer right now. The WiFi dongle also has a green light that turns on when I plug it in, so I don't think that's broken either.