There are other ways to do this but I chose this method because it creates a backup of your gamelist.xml before you mess with it. Time to remove the video entries from gamelist.xml (We'll still have the still images though): cd /new_card/home/pi/RetroPie/roms for i in * do cd $i cp gamelist.xml gamelist.bkp grep -v 'video' gamelist.xml > gamelist.new mv gamelist.new gamelist.xml cd. Now we use rsync (installed in the previous command if your didn't already have it) to copy all the system roms and artwork minus the videos: sudo rsync -zarvP -exclude='*.mp4' ~/RetroPie/roms /new_card/home/pi/RetroPie/romsĪnd now we have all the systems copied over. This indicates the 32GB SDCARD is mounted under the directory '/new_card'

It should have returned '/new_card is a mountpoint'.

Now create a folder to mount your 32GB SDCARD under and mount it:(Note: replace /dev/sda1 with your results from above.) sudo apt-get update sudo apt-get install rsync -y sudo mkdir /new_card sudo mount /dev/sda1 /new_card clear mountpoint /new_card It will most likely be device '/dev/sda1'. You'll see output that shows current mounts and two devices marked as '(not mounted)'. Steps:Use blkid to determine UUID for USB device so we can mount sudo blkid -o list

(Optional) use rsync to copy over your emulator configs.

Remove 'video' entries from each systems gamelist.xml.

Use rsync to copy over all the ROMS, omitting videos.

Place 32GB SDCARD into USB reader and mount on your pi booted from the 128GB SDCARD.

Flash fresh image from RetroPie website to 32GB SDCARD.

You could also just remove the videos and leave the roms and probably come close to fitting it on a 32GB card:

Mac emulator retropie