SD card in read-only format


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  1. alcarrot

    alcarrot New Member

    I'm currently using an LG P970 phone with an android ver 4.0.4.
    The issue is that out of nowhere, my SD card (SanDisk 8GB) just went into a read-only format. I can't use my camera, apps stored on my SD are now pretty useless, and I can't edit/store/delete files from the SD (via phone or PC).

    I think this isn't an isolated case and some people have experienced this with their devices but have found solutions. The problem is I have tried unmounting/mounting the card, error-checking on PC, and even resetting the phone back to factory settings, but nothing seems to work in my case(even the files are still intact, as if they're immortal:saint:).

    I'm not a "techie" person so hopefully there's a simple solution to this.

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  2. mikedt

    mikedt 你好 Guide

    Hi alcarrot welcome to AF. :)

    How long have you had the SD? It could have worn out, this does happen. Can you re-format it on your PC? Backup the contents first before you try. If it can't be formatted, replace it. Removable storage media does have a finite life, can only be written to a certain number of times. It might have gone read only to protect the contents.
    alcarrot and IOWA like this.
  3. IOWA

    IOWA Mr. Logic Pants Moderator

    I think it may be time for a new SD Card. Try the suggestion above and let us know how it turns out.
    alcarrot likes this.
  4. alcarrot

    alcarrot New Member

    I've only been using the SD card for around 6months though.
    But I'll try testing my phone with a different SD card and see if it still reacts the same way.
    Thanks for the help!
  5. Ssith

    Ssith Well-Known Member

    when mirco sd cards go into read-only mode and you didn't put them that way via software means, it's a sign that they're dying. it's a built-in feature to save your data on a failing card. back up the data, swap cards, move on. these things happen.
    alcarrot likes this.
  6. acolad

    acolad New Member

    Hi all,

    First post here and yes, I know the thread is already quite old, but I dare to ask anyway about this finite life of SD cards :

    I now had the problem on 3 (yes three !) SD cards which died after about just 2 months. Same symptoms as "alcarrot", cannot write to card anymore, nor format it, but data is readable without any issue. Two of them were ofrom "ADATA" and the third from "Transcend".

    These cards were used inside Xiaomi phones (Redmi2 and Redmi2 Pro, two different devices) and happened to be worn out after a little month or two. I did nothing special with them, at least I don't think so. Unless storing mp3, pics and running Titanium Backup every night would have been enough to induce so many writes ! I don't think so.

    I'm wondering where the problem came from (smartphone / sd card / other ?) and as said, this happened with different card brands and also in two different devices.

    Has anybody already encountered such a disappointment ? If I have to buy a new 64GB card every two months, it won't be cheap for my budget...

    I naturally tried to get them replaced by the manufacturer, but he want's me to send back the faulty items before replacing them, this I can understand, but I don't wanna send them my private family pictures and all other data still residing on them as the data is perfectly readable, just isn't writable or deletable anymore. They also don't want me to cut them with scissors before sending back. Such a shame ! I thought the customer should be the king, but this was loooong years ago I assume. :-(

    Thanks in advance for stories of other people having had same issues

    Cheers
  7. EarlyMon

    EarlyMon The PearlyMon Moderator

  8. acolad

    acolad New Member

    Hi EarlyMon, thanks for watching and the two links you posted ! Didn't try them yet but will do asap.

    I thought of counterfeit cards, yes. But I don't think they are as they got bought in honnest swiss shops here and not on any obscure chinese internet website. Anyway, it could well be...

    THANKS ! Will keep posted if I get any further.
    EarlyMon likes this.
  9. EarlyMon

    EarlyMon The PearlyMon Moderator

    Yep - even honest retailers get burned by the supply chain sometimes. I always check mine, first thing.
  10. acolad

    acolad New Member

    OK, so "SD Insight" doesn't seem to think the cards are fake. At least the correct manufacturer is displayed. But this surely also could be counterfeit, isn't it ? I don't know if there are other things to check. Anyway, I don't think they are counterfeit but still wondering how I managed to burn out three cards in less than 6 months !

    The SD formater you pointed me to also just says the SD card is write-protected, as the different smartphones or even my DashCam says. And it naturally doesn't have anything to do with the physical lock available on microSD card adapters, unfortunately... :-(

    Thanks a lot anyway and have a nice one ! I wrote again to the manufacturer to see if they would accept to help in a manner or another.
  11. EarlyMon

    EarlyMon The PearlyMon Moderator

    Best luck my friend!

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