How to Remove the Black Border from Raspberry Pi or RetroPie Display

Connect to your Raspberry Pi via SSH with the following command:

ssh pi@<your-pi's-ip-address>

For RetroPie, you can connect using the hostname retropie:

ssh pi@retropie

The default password is raspberry.

If your Pi doesn't have Internet access, you can instead remove its SD card and put it into your computer.

Edit the boot/config.txt file to make the change:

sudo nano /boot/config.txt

Change this line:

#disable_overscan=1

... to:

disable_overscan=1

Then, save the file and exit.

If you're using the SD card method, you can browse to this file on your computer and edit it using a plaintext editor (like Notepad) instead.

Reboot your Pi for the changes to take effect:

sudo reboot

Graphics on your Raspberry Pi will now take up the entire screen without the black border. You're all done!