Repair and Format Corrupted Android SD Card Without Losing Data

Sometimes your SD card in your Android phone malfunctions frequently, resulting in problems like this: SD card cannot be accessed, corrupted or not detected by the phone. To repair the SD card in trouble, you should fix it step by step: [1] export data; [2] quick format; [3] run chkdsk and repair file system corruption. Follow to fix this issue and restore all your Android SD card data now.

Table of Contents

Format to repair Android SD card

Quick Guide - What To Do for SD Card Repair:

  1. 1. Make a backup of all data on the card.
  2. 2. Format the card using a computer.
  3. 3. Reinsert the card into the Android device.
  4. 4. If the card is not detected, format the card on the Android device.
  5. 5. Insert the card into the computer and restore the data.
  6. 6. Insert the card into the Android device.

As we all know, an SD card plays an essential role in saving data and extending storage space on an Android phone, which makes it an indispensable storage device for most Android users. However, when a problem occurs to the Android SD card, serious data loss problem will occur. Android SD card corruption is a typical problem.

If you are having one of the below-listed problems on your Android memory card, it means that your Android SD card has been corrupted.

- Clear Error messages:

- Symptoms without warnings

  • SD card fails to show up on the Android phone
  • SD/memory card becomes undetectable/unrecognizable on the Android phone
  • SD card with saved data shows as 0 bytes on an Android phone
  • SD card cannot be read by the Android phone nor the PC

Sometimes your SD card in your Android phone malfunctions frequently, resulting in problems like this: SD card cannot be accessed, corrupted or not detected by the phone. To repair the SD card in trouble, you should fix it step by step: [1] export data; [2] quick format; [3] run chkdsk and repair file system corruption.

First. Extract/Restore Data from Corrupted Android SD card

To save all stored data on the corrupted SD card, we highly recommend you extract or restore data from the card first. Professional SD card recovery software can help you recover data from inaccessible SD card with ease. You can simply download and install EaseUS card recovery software on your computer for free and then follow the below guidelines to restore data out of corrupted Android SD card.

Step 1. Download EaseUS Data Recovery Wizard - the dependable SD card recovery software for Windows on your PC. Connect the SD card to your computer with either a card reader or by attaching the device that contains it. Launch the software so you can see the SD card from the disk list presented on the interface. Select the SD card and click Scan.

select the sd card and click scan

Step 2. The scan process should be running. A quick scan is able to quickly find the files that were recently deleted or items emptied from the recycle bin, and the later deep scan is useful for files that are harder to find, which might lose file names. During the course of scanning the SD card, you can start checking the results from the leftside tree-view pane, or simply use the Filter function to show up only the pictures, doucments, videos, emails and so on.

find wanted sd card files

Step 3. Double-click on a file will allow you to preivew its content. At last, select the desired files you wish to recover and click the Recover button to get them all back. When you're asked to choose a location to save the recovered files, do not use the SD card but another drive, to avoid data overwriting.

recover sd card files

Here's a video tutorial also telling you how to repair the SD card and recover data from it.

Do You Need Specialized Data Recovery Services?
You may need further help for tough data loss situations like reformatting drive, RAW disk, partition loss, repartition failures and system boot error. Consult with EaseUS Data Recovery Experts for cost-efficient one-on-one manual recovery service. They could offer the following services after FREE diagnosis:
1. Unformat the drive
2. Repair the RAID, RAW disk or operating system
3. Recover lost partition (the one that cannot be recovered by software)

Second. Format Android SD Card to FAT32

For an Android device, the compatible file system of external storage is FAT32 or exFAT. When your memory card ran into bad sectors or its file system corrupted, re-formatting would rectify the problem. There are three typical ways to format a memory card, USB flash drive, or HDD, including Windows built-in tools, CMD and third-party free SD card formatting tool. Take Windows Explorer for an example:

Step 1: Connect/insert the Android SD card to your PC.

Step 2: Open the File Explorer and locate the corrupted SD card (displays as a removable disk in general).

Step 3: Right-click on it and select Format.

Step 4: Reset the SD card's file system to FAT 32 and click Start to start formatting the card.

Step 5: Wait for the formatting process to complete and then click OK to keep all changes.

format sd card to fat32 to repair corrupted issue

Third. Repair Corrupted Android SD Card with CHKSDK Command

Caution: CHKDSK command can fix Android SD card corruption error but will remove all saved data permanently. Before you start this process, make sure that you recover all SD card files with reliable file recovery software

Step 1: Connect the Android SD card to your PC.

Step 2: Right-click on Start and select Command Prompt (Admin).

Step 3: Sign in as an administrator, then type: diskpart and hit Enter.

Step 4: Type: chkdsk f: /r/f and hit Enter; (Replace f with the drive letter of your own Android SD card.)

run chkdsk to fix corrupted sd card

EaseUS CleanGenius is a user-friendly computer fixing tool that is both safe and lightweight. It's a perfect alternative to CHKDSK command. Use this one-click tool to fix the damaged file system easily.

Step 1.  DOWNLOAD EaseUS CleanGenius on your computer and complete the installation. 

Step 2. Run the software. Click "Optimization", and then choose "File Showing" . 

select the file showing option

Step 3. Select the drive with a corrupted file system. Tick the "Check and fix file system error" option and click "Execute".

fix file system

Step 4. Wait the tool performs the repairing task. After that, click the "View" button to check the drive.

fix file system

Wait for the process to complete and then you can check whether the computer can open the SD card or not. If not, continue with the corrupted memory card repair software for further troubleshooting.

You can now insert the SD card into your Android phone and reuse it for saving important files and personal data again. 

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Updated by Gemma

Gemma is member of EaseUS team and has been committed to creating valuable content in fields about file recovery, partition management, and data backup etc for many years. She loves to help users solve various types of computer related issues.

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Written by Tracy King

Tracy joined in EaseUS in 2013 and has been working with EaseUS content team for over 7 years. Being enthusiastic in computing and technology, she writes tech how-to articles and share technical solutions about Windows & Mac data recovery, file/system backup and recovery, partition management and iOS/Android data recovery.

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