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Can't write to SD card

Discussion in 'Android Devices' started by MyNeverZen, Feb 13, 2021.

  1. MyNeverZen

    MyNeverZen Lurker
    Thread Starter

    Hi! I just bought this SD card online and after around 2 days a notification that says "Can't write to SD card" appeared. Because of that I can't delete or move files into the SD card. I tried formatting the SD card hoping that it would be fine but the notification still appears afterwards. I unmounted my SD card for a month and thought that it should rest and I inserted it just yesterday. I thought it would be fine now but the notification still appears. What do I do? I don't want my money to be wasted just like that. btw, its a San Disk SD Card with 64 gb capacity and my phone is Samsung Galaxy A10s. pleasee helppp!

    Update 13 min after: I turned off my phone, unmounted the SD card, and inserted it again. As I turned on my phone the SD card now "not inserted" on my files. I looked up to my settings and found that SD card is "corrupted" what do I do with this?
     


    #1 MyNeverZen, Feb 13, 2021
    Last edited: Feb 13, 2021

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  2. mikedt

    mikedt 你好

    Could be a duff or fake SD card? Where did you buy it? Suggest you check its integrity on another device or computer.
     
    Dannydet and Hadron like this.
  3. Hadron

    Hadron Smoke me a kipper...
    VIP Member

    Leaving a card unused for a month to let it rest is magical thinking, so I'm not surprised it didn't work. Giving electronics a minute or two to fully discharge is a real thing, or a hot device time to cool down, but nothing more.

    It sounds likely that the card has failed. It can happen (I had a lightly-used Samsung card fail after less than 6 months, and it was an unfixable master boot record failure). You could try formatting it one more time, but even if it worked how much confidence would you have in the card after this? I'd not want to store anything important on it. So my advice would be to get a refund or replacement on the grounds that it is defective.
     
    puppykickr, Dannydet and mikedt like this.
  4. MyNeverZen

    MyNeverZen Lurker
    Thread Starter

    i just bought it online. how do I check for its integrity?
     
  5. MyNeverZen

    MyNeverZen Lurker
    Thread Starter

    ye
    the seller already refunded me for about 50% but yet I'm still hoping that it can be used or recycled or something. is there any other way I can repair this one?
     
  6. mikedt

    mikedt 你好

    You can't do anything with a fake SD. What usually happens the fakers take something like a 2GB chip and somehow modifiy
    "online" is that from a reputable site like Sandisk, or just some whatever seller on Ebay or something? You can check it's integrity with a computer using H2testw https://www.heise.de/download/product/h2testw-50539 Which basically fills the SD with data, and checks if it reads back correctly. Fake SDs have a much smaller capacity, like 2GB, and are doctored to deceive the OS into showing a much larger capacity.
     
  7. Hadron

    Hadron Smoke me a kipper...
    VIP Member

    Though if the card has failed and can't be written to you won't be able to run that test. And TBH if you can't write to it it doesn't matter much ;).

    But it's good advice generally if you are going to buy cards online, especially if the price looked "attractive" and the seller wasn't a big brand themselves (and the fact that they've give a 50% refund suggests to me that they are not). If you are wondering why I'm favouring big brands here, it's because you not only are much less likely to get a bad card, but you have a much better chance of getting your money back if you do - an individual who has set up an online marketplace business selling fake cards will usually just close down once they start to get complaints and then relaunch under a different name.
     
    puppykickr, ocnbrze and mikedt like this.
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