The .m3u format is a playlist file. It's highly recommended to use .m3u files for your multi disc games. They are simple to create too:

1. Create a text file

2. Rename .txt to .m3u

3. Open the .m3u and add your disc to each line

Example 1

Chrono Cross (USA) (Disc 1).chd
Chrono Cross (USA) (Disc 2).chd

Example 2

Final Fantasy IX (USA) (Disc 1).cue
Final Fantasy IX (USA) (Disc 2).cue
Final Fantasy IX (USA) (Disc 3).cue
Final Fantasy IX (USA) (Disc 4).cue

4. Save file and place in the same folder as the content

You can also have your content in different folders. This is useful for front-ends that might scan disc and m3u files, leading to multiple files. Simply write the path to the content in the m3u files.

1. Let's say you typically place your psx games in /sdcard0/roms/psx/. (External storage)

2. Now create a folder outside the psx folder. Let's name it psxmutltidisc. (External storage)

3. As an example lets use Metal Gear Solid and place each disc in the newly created folder /sdcard0/roms/psxmultidisc/.

4. Now you can simply write your m3u file as such:

./../psxmultidisc/Metal Gear Solid (USA) (Disc 1) (Rev 1).chd
./../psxmultidisc/Metal Gear Solid (USA) (Disc 2) (Rev 1).chd

5. Save and place the file in our example folder /sdcard0/roms/psx/

Now your preferred front-end will only scan and show one file instead of three (in this case).

Now, this one is tricky to explain. Due to Duckstation switching to 100% scoped storage you cannot use Setup 2 with it. You can continue using Setup 1 as normal but this for people that want to use M3U files and not have multiple entries in their game list. For setup we're going to follow Setup 2 up until the point of writing the M3U file as its drastically different. Bear with me.

1. Let's say you typically place your psx games in /sdcard0/roms/psx/. (External storage)

2. Now create a folder outside the psx folder. Let's name it psxmutltidisc. (External storage)

3. As an example lets use Metal Gear Solid and place each disc in the newly created folder /sdcard0/roms/psxmultidisc/.

4. Now you must write a uri path that Duckstation can recognize.

• You can figure out the path by loading up Duckstation standalone > Long press any game > Game Properties > Look at Path
• You will now get a long path that starts with the following:

• The Stringofnumbersandletters for External Storage noted above will be different from person to person. Keep this in mind
• An even faster method: add the path to your mutlidisc folder to the game list for Duckstation > copy path of each disc > delete path afterwards

5. Now that we got the path write it in your:

• My string of numbers & letters for my external storage is 0B64-2045 (Yours will be different)
• For any spaces use %20
• For the start of the root folder use %3A (Example:roms/psxmultidisc = %3Aroms%2Fpsxmultidisc)
• For any / after the root use %2F at the start

content://com.android.externalstorage.documents/tree/0B67-2045%3Aroms%2Fpsxmultidisc/document/0B67-2045%3Aroms%2Fpsxmultidisc%2FMetal%20Gear%20Solid%20(USA)%20(Disc%201)%20(Rev%201).chd
content://com.android.externalstorage.documents/tree/0B67-2045%3Aroms%2Fpsxmultidisc/document/0B67-2045%3Aroms%2Fpsxmultidisc%2FMetal%20Gear%20Solid%20(USA)%20(Disc%202)%20(Rev%201).chd

6. Save and place the file in our example folder /sdcard0/roms/psx/

The M3U file will not work for anything but Duckstation.