Here's the guide i promised on the other Retro thread.
There's all links you need and it's simple, very, just that it looks exhausting but in fact it takes 10 minutes if you don't count every seconds to download those programs.
So it's about "How to make you a multi-emulator pack working on your PC the best way it could", with enhanced performances, a bit like if you installed Linux on another HDD, but that one is ONLY made for emulation so it's FAR easier than Linux. As it's a Frontend.
RUFUS Formatter
https://rufus.ie/
"Rufus" which is a FULL storage formater.
Why to use Rufus instead of the Windows casual formatter? The difference with a simple format is that rufus erase completely all partitions, and for example when your stock is starting to be full of data like a 512 gigas sd card, there's issues like slowdown while you're launching it etc.
Note: be sure to choose to right device if you got a list on the selection bar + on the first selection bar "not demarrable" or the device you selected to install Batocera / the Multi-Emulator OS.
With that tool Believe me you can store 510gb on a 512gb without having those type of trouble.
-BATOCERA Iso : (take the one for Windows or others > there's also for very old pc

)
https://batocera.org/download
Batocera is a frontend for multi-emulator you have to install on a SD card. There's tons of explanation for it, but it's quite guided and simple.
-You will need 2 storage devices : one to install Batocera, the other, i suggest almost 1 or 2 Tera minimum if you want to enjoy all the features and got a pleasant experience. you will have to choose on the option to store your roms, isos and everything else (mini-vids or pictures when a vid is not available/pretty rare/ from each game you download, overlays for the black bar as old games where 4/3, description etc.)
-Balena Etcher link :
https://etcher.balena.io/
That tool is an installer, it will serve to install Batocera or another if you prefers but that one is the most performant i recommand.
It's super simple no need big explanation : Check the Batocera iso, check the storage, launch > that's all
1. When everything is installed and ready you should enter on your bios, or the "boot service" of your PC and place BATOCERA as the first device. You can plug your extra storage after, it will be recognized directly by Batocera (where you will place every games and more)
2. If you want to goes back to your Windows/Linux, close BATOCERA and remove only the storage where you installed it.
There's tons of tutorial and roms packs, isos, website where you can download all you need. I prefers not giving you links, you should normally able to found everything you need with google + Youtube as there's people sharing big giga or torrent package

An RPCS3 package i don't think you will found as games are heavy, same for PS2/Gamecube games, or some 2000-2010 Arcade machine, patience is the key.
Now if it's for only very few games it should be fast, there's also some old hard drive plenty of games on Aliexpress, up to you if you want to pay or not.
Ask if you got some question, for installing (now i'm not a pro, just got a long experience with emulation and all)
I've took my time this morning to make that tutorial more or less clear, i hope you will manage to do it, i may answer if there's some question but i can't do everything at your place so it's up to you now
Just. Have. Fun. Mates.
