1. nerdlesstosay's Avatar
    Hello all,
    I have recently upgraded my phone to Android 6.0
    Everything worked fine until i formatted my SD card to Internal.
    After the conversion, it was working well. I was pretty much satisfied. With that confidence, i moved all my apps from Internal to SD card.
    After some minutes my phone got struck, so i restarted by removing and placing the battery in the back.
    When it booted up it didn't detect my SD card and kept showing an error that, i need to Forget my SD card.
    i googled the condition and found a post explaining the issue that it is Android 6.0's bug, and it's highly recommended to not move apps from Internal to SD card without a reboot, after converting the SD card to Internal.
    The post also explained about wiping the SD card, as the only option left, and instructed to fastboot the device.

    For some unknown reasons, the default "hold press Power button and press Volume Down" didn't work in my phone and it took me to a meta mode, where nothing is displayed apart from saying that it is a meta mode.
    Then i took a wrong turn by repeating the same by pressing the Power and Volume Up button. It took me to factory mode, where i was displayed with 6 options in Chinese.

    I can't read Chinese, and one of the option had an English word "eMMC", i thought this was the option to wipe out the SD card and selected it. It restored my phone to factory settings by erasing the Internal memory instead of the SD card.

    Now, my phone detects my SD card, but shows it as "Unsupported" under Storage and USB option. And it asks me to Set Up the SD card by formatting it.

    There are two options, "Use as portable storage" and "Use as Internal Storage".
    If i select the first option, it says SD card is ready. But it doesn't format or fix the errors . And if i go for the 2nd option, it doesn't format and it displays the following error as a Toast.

    Couldn't erase SD card
    command '46 volume partition disk: 179,128 private' failed with '400 46 Command failed'


    This is a Strontium 32GB class 10 SD Card. Kindly help me to format the SD Card and fix it's errors so i can use it again.
    04-21-2016 10:57 PM
  2. B. Diddy's Avatar
    Welcome to Android Central! The SD card could be corrupt, defective, or counterfeit. Install SD Insight to see if the card is genuine or counterfeit. Counterfeit cards are programmed to report more storage than they actually have, and if you try saving more than the card can actually hold, then files can start getting corrupt.


    If it's a valid card, then go to Settings>Storage, Unmount the card, remove it, and insert it into your computer. Run chkdsk to look for bad sectors: http://forums.androidcentral.com/amb...d-sd-card.html.
    04-22-2016 03:05 PM
  3. handayanielly's Avatar
    Hello, i'm now facing the same problem. My sd card can't be formatted in my phone nor in computer. I have tried to format it on my PC but it doesn't work. Is there any way to fix this problem?
    04-22-2016 07:12 PM
  4. B. Diddy's Avatar
    Welcome to Android Central! If the computer can't recognize it, the card is probably dead. I'm not aware of any easy way to recover a dead card like that. You could try this guide: http://forums.androidcentral.com/amb...ted-files.html
    04-23-2016 06:00 PM
  5. ahmadayman93's Avatar
    I have the same problem and tried both ways
    As for the SD Card it is genuine with all the storage appearing in SD Insight

    and for the chkdsk I performed it and no errors appeared

    but my memory card when adopting it to internal storage it gives that same error
    05-07-2016 02:40 AM
  6. B. Diddy's Avatar
    Welcome to Android Central! Can you try a different card?
    05-08-2016 12:05 AM
  7. sa2001x's Avatar
    Hi,
    I am also exactly facing the same issue. Have you got any solution please reply me.
    07-06-2016 11:57 AM
  8. Arun Oommen's Avatar
    i own an A7000 as well and i have encountered the same problem.I guess it will be a bug on lenovo and should be reported on the lenovo forum
    07-27-2016 11:55 PM
  9. amitbedi's Avatar
    i own an A7000 as well and i have encountered the same problem.I guess it will be a bug on lenovo and should be reported on the lenovo forum
    I got lenovo a7000 updated to marshamellow and was working fine with sd card as internal memory but I pulled sd card out and inserted new one to transfer some data but didn't knew that older sd card was encrypted and can't be read on pc.
    When I reinserted the sd card again .It simply asked to format.i lost all data.as I had just one option either portable or internal memory.
    Why it is that I'd sd card is pulled out and we insert again , it needs to be formatted ?
    08-07-2016 12:07 PM
  10. isaac emmanuel's Avatar
    Hi
    I am also exactly facing the same issue. Have you got any solution please reply me.
    I just encountered this problem yesterday.... My phone hung up ...
    09-29-2016 11:01 PM
  11. Rukbat's Avatar
    Easy solution - NEVER set the SD card as internal. If there's not enough room in the phone, you need a larger phone. (Would you mount a gasoline tank in the back seat of a car for long trips? It would work - but it's not the right way.)
    Laura Knotek and J Dubbs like this.
    09-30-2016 02:08 PM
  12. Dhananjay Mehrotra's Avatar
    Hi, do you got any solutions bro... I am facing same issue... Please help
    11-08-2016 01:15 PM
  13. J Dubbs's Avatar
    Easy solution - NEVER set the SD card as internal. If there's not enough room in the phone, you need a larger phone. (Would you mount a gasoline tank in the back seat of a car for long trips? It would work - but it's not the right way.)
    He's right.. adoptable internal storage is one of the many bugs in marshmallow that doesn't work, and they're never going to fix it now that nougats out. Google's great at leaving bugs unaddressed, and just bringing out a "new" OS with the same bugs but some new features (which don't always work) to distract you and keep folks buying new devices.
    Marshmallow sucks. And I fully expect the same experience on Nougat with a few new features. I've grown accustomed to Google's business approach. As long as Nougats no worse than marshmallow I'll be upgrading... which so far looks to be the case😕
    11-09-2016 05:53 AM
  14. deta121312's Avatar
    not work, i Have 2 sd card and still Unsupported sd card, i think solution downgrade to lollipop.
    06-20-2017 04:04 AM

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