If you have populated your RG35XX PS folder with games yet GarlicOS has not presented PlayStation as a console option this is likely due to GarlicOS not having the functionality to read sub folders and that your games each have dedicated folders. For GarlicOS to see your games all your games must be directly in the console folder.
However typically PS games are in .bin format and are saved in folders because even single disk games will have at least two associated files i.e. the .bin files and the .cue file. For multi disk games, where there is a .bin file and a .cue file for each disk, and potentially a .m3u file to handle multi disk operation, the problem is exacerbated.
One solution would be to convert your PS games to the .chd format. Converting the PS “disks”, i.e. pairs of .cue and .bin files to the .chd format will result in a single file per disk which is also compressed taking up much less space.
To convert “disks” to .chd download the zip of the software “CHDMAN” below:
https://archive.org/details/chdman
Unzipping the file will create a folder CHDMAN.
In this folder open the batch file called “Cue or GDI to CHD” with a text editor and replace the line:
for /r %%i in (*.cue, *.gdi) do chdman createcd -i “%%i” -o “%%~ni.chd”
with:
for /r %%i in (*.cue, *.gdi, *.iso) do chdman createcd -i “%%i” -o “%%~ni.chd”
This update allows the batch file to work with ISO files too.
Now to convert “disks” simply drag and drop the .cue and .bin files into the CHDMAN folder and then double click the batch file “Cue or GDI to CHD” to run it.
This will produce a single .chd file you can then save to the PS folder of your GarlicOS games directory.