this post was submitted on 11 Jun 2025
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It's A Digital Disease!

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The original post: /r/datahoarder by /u/RainAndWind on 2025-06-11 01:20:38.

Hey, so there's a collection of ps1 roms on archive.org, for archiving.

https://archive.org/download/psx-roms-archive

But, some of the RAR files can't be extracted by Windows 11, and give an error.

But they can be extracted by 7zip.

And when I try to re-compress the files with a single-threaded solid-block level-9 LZMA with a 3GB dictionary into a 7z... The file size is noticably bigger than the RAR which couldn't be extracted with Windows 11 natively. I can't think of how to make my own compression any harsher, yet it still loses out.

What's going on?

  1. What has happened to compress some of these ps1 games beyond my comprehension?

I really wanted to have native windows 11 extract support for archives I keep for myself. It isn't a dealbreaker, but what has gone wrong or right here to make these RARs so compressed but also not easy to extract?

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