How to Mount an ISO on Steam Deck
Mounting an ISO on a Steam Deck isn't as straightforward as on a standard PC, but here's a workaround. First up, you'll need to switch your Steam Deck to Desktop Mode. Once there, open Discover Software Center and install an ISO mounter app like Gnome Disk Utility. After installation, you can use the app to select and mount your ISO file. Finally, switch back to Gaming Mode to access your mounted ISO content. Remember, since Steam Deck runs a Linux-based OS, not all ISO content may work perfectly.
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Honestly, mounting an ISO directly on the Steam Deck seems like overkill. Why not just install your games through Steam or another game store? Keeps things simple and you're less likely to run into compatibility issues.
Just use a USB stick, lol. Easier than messing around in Desktop Mode.
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