Fix and Use a Corrupted Micro SDXC Card in Your Samsung Galaxy S4

Edited by Calob Horton, Inukshuk, Dougie-1, Rob and 3 others

Note: This is part of the series on how to use the Samsung Galaxy S4. More great how-to articles to help you wrangle the most out of your S4 can be found here: USE SAMSUNG GALAXY S4

If your Samsung Galaxy S4's micro SDXC card has stopped working, chances are that it has been corrupted. This happens a number of ways: a file could have damaged the data, or perhaps the card was moved during a data transfer. Regardless of how it happened, there's a way to fix it, and this guide will help you do just that.

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  1. 1
    Confirm it's an issue with the card
    1. Unmount the micro SDXC card by doing the following:  
      1. Go to Apps->Settings.
      2. Tap the Device tab.
      3. Scroll down, find and tap the Storage panel.
      4. Find and tap Unmount micro SDXC card.
    2. After you've unmounted the card, take your battery cover off and slide the micro SDXC card out.
    3. Put the micro SDXC card back in the phone. If it still doesn't work, proceed to the next step.
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  2. 2
    Recovering your files
    1. Put your card in your computer's SD card slot using the adapter that came with your card.
    2. Download this application.  
      1. This app will try to recover some of your files.
      2. Extract the downloaded file.
      3. Open the photorec_win application.
      4. Select your SD card drive in the ensuing console window and hit Enter.
      5. Select Intel in the succeeding interface and hit Enter.
      6. Leave the default selection in the next console display and hit Enter.
      7. Select Whole and hit Enter.
      8. Press the Y key on your keyboard to confirm the recovery process.
      9. Wait for the recovery process to finish.
      10. When finished, go to the TestDisk folder and see the recovered files.
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  3. 3
    Formatting the card
    1. Now you'll need to reformat the card.  
      1. If you're on a Mac, use Disk Utility to reformat the micro SDXC card as FAT.

        Screen Shot 2014-07-25 at 10.56.02 PM.png
      2. If you're on Windows, download this utility and reformat the card as FAT.
    2. After you've reformatted the card, you can put it back into your phone and follow these steps to remount the card.
    3. If you've followed these steps and you card still doesn't work, it's time to buy a new one. Follow this guide to make sure you purchase the correct card for your Samsung Galaxy S4.
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  • If your computer won't recognize the card, it means that the card itself is damaged and it will need to be replaced.

Questions and Answers

My Galaxy S4 got stuck while I was accessing my Sandisk memory card?

I removed the battery after a while, and since then my phone does not read the card. The PC reads it but did not show everything on the card. Only about 15 percent of it. I used the recovery software in the link but couldn't recover much and most of the files were damaged and divided into a number of files. The memory card also gives errors of write protection and can't even be formatted. Please help.

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The SD card might either corrupted or damaged. As your computer reads data off it, copy everything you need off the card to your computer (even those 15%). Then, check if there is a little switch on the side of the card adapter when you are plugging it into the computer and position the switch so that it is up. The adapter can be faulty too; therefore, keep a spare one too.

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Press the Windows key and "R" and type "cmd". Enter "diskpart". Enter "list disk". Find your SD card in the list by the size and enter "select disk [number]", where [number] is the SD disk number from the previous list. Enter "attributes disk clear read only" and close the Command Prompt console.

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Press the Windows key and "R" and type "regedit". Click "HKEY_LOCAL_MACHINE", "SYSTEM", "CurrentControlSet", "Control", "StorageDevicePolicies", and find "WriteProtect". Right-click it and select "Modify...". Enter "0" as the value. If you do not see that, then just proceed to the next step.

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Now, press the Windows key and "E", right-click your SD card drive and select "Format..." Attempt to format your card as FAT32. Click "Start".

Now, copy all of the needed files back off your PC to your SD card and try to reinsert it into the phone.

Is it still not working? Run an antivirus full scan. This might help too. Then, you might want to try to use a new SD card by copying the same files from your PC onto it.

Samsung SD card recognition problem on Tablet and PC?

I have a removable 128 GB Samsung SD card originally formatted in FAT 32 format to work in an old Samsung Galaxy Tab S Tablet. I also have a separate Tablet problem. The tablet will not recognize the card and it too is malfunctioning as it states, "the process system is not responding. Do you want to close it? OK Wait. Neither solution appears to work.. . My PC will not recognize the card other than recognising a "Removable Disk (I)". I know there are photos and short videos contained on the SD card. HELP!!

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Recent edits by: Eng, atiffayyaz5, Rob

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