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sd card corrupt

Discussion in 'Android Lounge' started by gazza25, Apr 12, 2020.

  1. gazza25

    gazza25 Newbie
    Thread Starter

    hi, i have a galaxy s9 with a sd card which was working fine, i have tried to use its saying its corrupt, i tried to format it but it keeps saying unable to format and i have also on another programme got this error message come up
    [ERROR] Invalid end of sector signature: 0x0003
    [ERROR] fat_check_validate_boot_sector returned error: 22 (Invalid argument)
    [ERROR] Initializing cached values failed: 22 (Invalid argument)
    [ERROR] Generated invalid volume. fat_volume_create returned: 22 (Invalid argument)

    Any ideas on how to fix please .

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  2. The_Chief

    The_Chief Accept no imitations!
    VIP Member

    Depending on how old the card is and how much data has been saved to it (and retrieved from it) over time, it's very possible that it has simply died. I hope you routinely back up your card, because ALL flash memory has a life span measured in read/write cycles. The cheaper the card, the shorter its life span. That's why I always recommend getting top-brand, high-end memory cards from reputable dealers.

    Another possibility is that the card is counterfeit and has reached its actual capacity. Many scam companies out there (millions on eBay and a bunch on Amazon) will take cheap, no-name 16GB microSD cards, format the boot sector to read a much higher capacity, dress the outside to look like a name-brand card, and sell it. I can't tell you how many listings I see for 500GB, 1TB, 2TB or more cards for less than $80 USD. And hundreds of people are buying them! If I get a 10 liter bucket, I can mark it "50 liters" all over... but it will never hold more than 10 liters of water.

    I recommend an app called Fake Device Test that can do a quick scan or a full scan (recommended) to analyze the actual, physical storage capacity of a card.
  3. gazza25

    gazza25 Newbie
    Thread Starter

    Thanks for reply, it not that old only about a year...i got it from Tesco...i can still view everything on my sd card from my computer but it just wont format or delete anything off the card and doesnt work in my phone as says corrupt. will do the fake device test now as well...thanks
  4. puppykickr

    puppykickr Android Expert

    Probably a good idea to make a backup of anything on that card that you want, and do it now.
    Once a card goes bad, there is generally no warning at all.
    The idea that it will not function in the phone any longer but can still be read in the computer is probabably that card being really, really nice to you and giving you this chance to get your stuff before it dies.
    The_Chief, ocnbrze and MrJavi like this.
  5. mikedt

    mikedt 你好

    Sounds like it's failed in read only mode. And only thing you can do is backup aand replace it.

    SDs can and do wear out with use. Basically flash storage does have a finite number of write cycles.
  6. The_Chief

    The_Chief Accept no imitations!
    VIP Member

    memory cards, jump drives, SSDs... everything that stores data on a chip will eventually fail. I don't know what the lifespan of a Tesco card is, but I would not expect it to be anything remarkable. SanDisk and Samsung generally have the most robust and long-life chips out there.

    If there is one place where I would never compromise quality to save money, it's the storage of my critical files. I find it worth the extra expense. Even with my new SanDisk microSD card, I did a full scan to make sure that I got a legitimate card and not a counterfeit.
    puppykickr and mikedt like this.

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