When scouring the internet for pre-made Batocera images (or building your own), you will find three common sizes:

You have two options: Download a pre-made "image" (community build) or build your own. Here is the professional guide for the DIY approach.

Disclaimer: Downloading copyrighted ROM sets is legally grey. Only download images for games you own physically.

However, the community is active. Searching for "Batocera 320GB v39" will yield .img files that are ready to clone. These are often superior to DIY builds because:

To install a pre-made 320GB image:

If you prefer a clean, legal setup:

This gives you full control and smaller download size.

The biggest question newcomers have is: "How many games is that?"

Because ROM file sizes vary wildly (a Game Boy game is tiny; a PlayStation 2 game is huge), storage isn’t about the number of games, but the generations of consoles.

A well-curated 320GB build typically includes:

What you likely WON'T get: You generally will not find functional Wii U, PlayStation 3, or Nintendo Switch libraries on a 320GB drive. Those games are massive (10GB–50GB each), and this drive size is too small for them.

⚠️ Legal note: Most pre-made 320 GB images contain copyrighted games. Only keep ROMs you legally own.

If you wrote the image to a drive larger than 320GB: