RetroPie Tweaks/Setup for Raspberry Pi 3

<b>Install Raspberry Pi OS using Raspberry Pi Imager</b> -Dowlonad Raspberry Pi Imager from link on the right, then install. -Launch Pi Imager, Select OS, Emulation & Game OS, Retropi, Select Latest Version. -Insert SD Card Into PC, Select Storage -Click Write. <b>Insert SD Card into you Raspberry Pi and boot right into Retropi.</b>

<a href= "https://retropie.org.uk/docs/Running-ROMs-from-a-USB-drive/" target="_blank">https://retropie.org.uk/docs/Running-ROMs-from-a-USB-drive/</a>

In order to have a 1:1 ratio on the screen we have to set our resolution in /boot/config.txt. To edit, exit emulationstation (Select > Quit > Quit EmulationStation), then type sudo nano <b>/boot/config.txt.</b> Or edit use card reader and edit <b>config.txt</b> from boot partition (Editable In Windows). Remove the<b> #</b> before <b>hdmi_force_hotplug=1</b>. Remove the<b> #</b> before <b>hdmi_group</b> and set it to <b>2</b>. Remove the <b>#</b> before <b>hdmi_mode</b> and set it to <b>87</b>. This is the custom HDMI mode, so now we have to set a custom resolution and refresh rate: Add <b>hdmi_cvt=1024 600 60</b> (or set it to your resolution and refresh rate). - Example 1024px x 600px @ 60Hz <b>Reboot</b>. <div> hdmi_force_hotplug=1 hdmi_group=2 hdmi_mode=87 hdmi_cvt=1027 600 60 </div> <b>Credits:</b> Thanks <a href= "https://pixel.red/guide/retropie-custom-resolution/" target="_blank">https://pixel.red/guide/retropie-custom-resolution/</a>