The transferred games should now be visible within EmulationStation.

Refresh the game listing in EmulationStation by pressing F4, or press Start on your controller > Quit > Restart EmulationStation.

The ROMs have now been transferred from the USB to the RetroPie system's SD card If the USB stick has an activity light, wait for it to finish blinking, else wait (with many GBs of ROMs, wait several hours)

Plug it back into the RetroPie system.

Add the ROMs to the USB stick inside their respective folders within the retropie/roms/$CONSOLE folder, where $CONSOLE is the name of the target console, e.g.

Remove the USB stick and plug it into the computer containing the ROMs.

If the USB stick has an activity light, wait for it to finish blinking, else wait a few minutes

Create a folder called retropie on the USB stick.

Ensure that the USB stick is formatted to FAT32 or exFAT, and that the SD card has enough free space to hold all ROMs.There are three main methods of transferring ROMs: via USB stick, via SFTP, and via Windows (Samba) shares. That being said, in the search of your childhood - Google is your friend. There are many issues involving copyright laws regarding the usage of ROMs, so in order to preserve the integrity and longevity of the RetroPie project, the download locations of ROMs will not and cannot be added to the Wiki. In a RetroPie context, ROMs are digital copies of games which can be run on emulators (software that mimics your old gaming consoles).

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Validating, Rebuilding, and Filtering Arcade ROMs

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