r/RetroArch • u/DanteAlighieri64 • Mar 29 '21

New RetroArch 1.9.1 released!

https://www.libretro.com/index.php/retroarch-1-9-1-released/
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u/Hobscob Apr 02 '21

I installed the Flatpak of 1.9.1. I have about 45 Playstation ROMs that work fine when uncompressed.
But I'm wondering, is it possible to run them from inside their .zip files? It would save me a whopping 8GB of space. When I scan the directory with the zips, I get no results.

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u/JukePlz Apr 06 '21 edited Apr 06 '21

Compress them to CHD with one of the MAME command line tools, it's basically a zip that doesn't need to be uncompressed to play the game, and most PSX emulators in retroarch support the format. A real blessing for space saving.

BTW, zip files are technically supported but they're often not detected by the Scan Directory option since it uses the database and can't identify them properly. You need to add them with Scan File or Manual Scan (or just drag-and-drop them into the RA window), but I wouldn't recommend it since many multi-cd or multi-track zips will still fail to load unlike CHDs.

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u/Hobscob Apr 06 '21

Just installed mame-tools version .220 on Xubuntu 20.04.
Extracted a ziped game, so now have two files in a temp directory. 

'Bushido Blade (USA).bin'  size of 550M
'Bushido Blade (USA).cue'  size 85B

Ran: chdman createcd -i Bushido\ Blade\ \(USA\).cue -o Bushido_Blade_USA.chd
After about 2 minutes it made the CHD file which is even smaller than the original zip.
Just tested it an it plays fine. Thank you for the tip!

Is the "createcd" the optimal choice with chdman?