I can't fine File0

[Manny-boi]

I m trying to find the file0 in order to read the Pannel n17. In my Appdata folder there are just 2 file of undertale. System_Information_963 and undertale. There isn't anything more. How can i find the file?

[Saphayla]

System_Information_963 is a file left over by Genocide, and Undertale.ini is a file that persists throughout playthroughs and gets deleted only with a True Reset. If you can't find file0 and file9 there, then they simply don't exist. If they're not there, then you must've reset the game recently. They will get created once you save the game.

[Manny-boi]

You were right, was the simplest solution. I simply started again and saved the game XD