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Transfer ROM's with USB - Issue with files being stored as ".XML"


  • I'll have my USB hub sometime tomorrow, so I'll post the results of manually copying files via wifi or USB later in the day.


  • Well, I feel a little bit dumb here. I was asked several times if the files on the thumb drive were, in fact, xml files. Everything I checked from the Windows OS showed that the files were of the correct type (SMC, NES, GB, SG, etc). The files showed the correct file extensions and file associations.

    For some reason though, the Pi was reading them as XML. I can only guess that something strange happened with the formatting of the USB stick that cause the Pi to view them as XML. When I used file manager to view the files on the USB drive, before transferring them, found they each had the XML extension following the true file extension.

    I was able to transfer the files using the \RETROPIE\ unc path and everything worked fine. I'm still stumped as to why the XML showed up in the first place. I'm going to reformat the USB stick and copy some fresh roms to it and see if I can reproduce the issue. I will do one transfer manually, without putting anything in the roms folder on the USB stick. Then I will try one using the roms folder and the auto-transfer feature.

    So far, All the consoles I've tested have worked except GBA (but I'm pretty sure that is because the bios file was saved using all caps.) I only found Super Mario All-Stars controller not working, which I think I read this is a known issue.


  • @Rohan82 Haha !
    Now we are sure the file change is between your computer and the USB drive, we can narrow down the reasons of this behaviour.

    After a quick search, it seems that Symantec Endpoint Encryption (and maybe other) automatically encrypt files as XML when copied on external storage.
    Could you check this ?


  • I didn't even think of that. I recently started a new job and I was using my work computer to transfer the file from my media server (over UNC path) to my thumb drive. My previous work computer didn't really have any extra software on it like that, but this one does. I can almost guarantee that is exactly what happened.

    I definitely feel like this is a Homer Simpson moment. Doh!! And i'm a little irritated I spent so much time on it knowing now what was happening. I could have transferred the files directly from my server and saved a couple days.


  • I definitely feel like this is a Homer Simpson moment. Doh!! And i'm a little irritated I spent so much time on it knowing now what was happening. I could have transferred the files directly from my server and saved a couple days.

    Absolutely, but we all would have missed this little bit of knowledge :)
    Moreover op @duviuvi has the same problem. Hope this thread can help him too.

    Anyway, my work here is done
    flying away


  • @Sano If I am to be nitpicky, flying away is a bit out of character for Sano. :) I'd expect you to go back to being a regular at Akabeko instead!

    Well done on the investigation piece here, though!


  • I really appreciate you both steering me in the right direction. This project is for my Brother-in-Law for his birthday in June. He's a big fan of retro games and cartoons. He's going to love it. However, now I want to build one for myself... lol


  • @Rohan82 Definitely do so, and stay around for the fun!


  • @Rohan82 My parents want one too, they love it :D


  • The next one will be a Pi 3 B so I can have the option to include PS1 and N64 games as well as flexibility to try a bunch of other IoT stuff that's been on my mind for a couple years. :)

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