Hello
To create a new topic under Lakka, follow the link below and you should see a round blue button in the bottom right corner of the page (providing that you’re logged in), click on that and you should be good to go.
Link: https://forums.libretro.com/c/libretro/lakka-tv-general
What hardware and version are you using?
I’m still using the Christmas build on my rpi3. If a game tells me to insert another disc, i pull up the emulator options, scroll down to “Disk Control” and click ok, which brings up the option “Disk Image Append”, click on that and then all thats left to do then is find the disc image, and click on the .cue file.
Hope that helps