Discussion What brand is your eXfat formatted SD card did it corrupt?

Discussion in 'Switch - Emulation, Homebrew & Software Projects' started by Caleb Metzger, Sep 22, 2018.

  1. Caleb Metzger
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    Caleb Metzger Advanced Member

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    Apparently SanDisk SD cards have a 16mb unallocated partition which sandisk has this to say about "You may leave the 16MB unallocated space as it is. A portion of the total capacity is used to store certain functions including optimizations of the memory that support performance and endurance and therefore is not available for user storage.“ could this be a reason why some sd cards corrupt and others don’t? Any responses appreciated
     
  2. tbb043

    tbb043 Member

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    I generally use sandisk, no corruption.
     
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  3. jlucasp25

    jlucasp25 Advanced Member

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    Toshiba, never had a problem.
     
  4. Sora Takihawa

    Sora Takihawa Planeptunes Male CPU

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    Planeptune
    Sandisk
     
  5. nero99

    nero99 GBAtemp Addict

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    Used Samsung, constantly corrupted on me. Switched to silicon power, never corrupted. Also been using sandisk, no corruption either.
     
  6. Draxzelex

    Draxzelex GBAtemp Guru

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    Don't mean to hijack this thread but the developers at ReiNX made a Google Survey for people to fill out that includes a lot more risk factors besides brand that has a better chance at identifying the source of corruption than this place. Here is a link to the survey: https://goo.gl/forms/2FQJe4rJy9an0vz82
     
  7. Sora Takihawa

    Sora Takihawa Planeptunes Male CPU

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    samsung corrupted on me changed to sandisk

    — Posts automatically merged - Please don't double post! —

    thanks @Draxzelex
     
  8. Ericthegreat

    Ericthegreat Not New Member

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    I have not had corruption with my samsung sd, I filled out the survey, ty for linking that.
     
  9. nando

    nando GBAtemp Addict

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    thanks, but can we see the results?
     
  10. Giga_Gaia

    Giga_Gaia GBAtemp Maniac

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    When I connect my sandisk in my computer, if I try to copy something to it, it disconect after a few seconds. It even does that if I try to run a test with h2testw.

    However, if I use ftp server to transfer files directly to Switch, the microSD card still accept them without any problem or disconnection. I am starting to think there is a problem with Windows that just break my card (I tried on another computer and it's the same result too).
     
  11. Draxzelex

    Draxzelex GBAtemp Guru

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    Sorry, I'm only passing word of this survey. It was created over a week ago but I don't think it caught much traction after it was posted (it was posted in a few Discord servers and even on reddit). If you head to the ReiSwitched Discord server, you can ask the people who created it for further details.
     
  12. Biff627

    Biff627 GBAtemp Advanced Maniac

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    Everyone I've seen that has corrupted has been using a cheap card or a sandisk card.

    Using Samsung and have used homebrew all the time and have had no issues.
     
  13. Sora Takihawa

    Sora Takihawa Planeptunes Male CPU

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    i got 2 times a samsung Evo from a Media Markt (Electronic store chain so no Fake ) and had probs with that

    — Posts automatically merged - Please don't double post! —

    i use a Sony Cardreader so...
     
  14. XWildcat

    XWildcat Member

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    Im using a 256gb Samsung, not had any corruption yet
     
  15. Sora Takihawa

    Sora Takihawa Planeptunes Male CPU

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    but i dont say samsung is bad....i mean it can happen to every brand. i dont trust PNY
     
  16. gnmmarechal

    gnmmarechal GBAtemp Guru

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    I've used both Samsung Evo cards and SanDisk ones. No issues so far.
     
  17. Draxzelex

    Draxzelex GBAtemp Guru

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    So people can better trust that the developers of ReiSwitched are working hard towards this exFAT dilemma, I'll share two of their nuggets of information.
    1. Corruption occurs on both FAT32 and exFAT however FAT32 has a way to 'mask' the corruption (what is referred to as journaling) which exFAT severely lacks. This means that corruption is due to the Nintendo Switch and not any homebrew or CFW. The reason corruption even started showing up is most likely due to the fact that exFAT's primary advantage over FAT32 makes it more valuable for hackers than non-hackers.
    2. One of the causes of corruption may be existing homebrew inappropriately. To reduce the chance of corruption, it is highly recommended to exit homebrew without pressing the Home button. Most, if not all, homebrew have a way to exit their application so be sure to utilize that method instead.
     
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  18. Ericthegreat

    Ericthegreat Not New Member

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    For those that use psnes it's R and - to exit game then + and - to exit emulator.
     
    Last edited by Ericthegreat, Sep 22, 2018
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  19. Techjunky90

    Techjunky90 GBAtemp Regular

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    Been using a SanDisk since June, have about 25 error codes in Dev menu, yet to have any corruption
     
  20. theguyver

    theguyver Advanced Member

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    I have a 400gb sandisk, no issues. I use to have a 128gb ADATA and it was stuck on read only after a month of use.
     
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