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27 July 2023  John Weaver  Senior Program Developer
 

Summary
Learn how to repair a corrupted Android SD card without losing data. Our article provides data recovery tips and effective methods to fix unreadable or unrecognized cards.



Table of contents

table iconI. Use Renee Undeleter to recover/extract Android SD card data
table iconII. How to fix a damaged Android SD card?
fix my phone sd card
The cause of Android SD card corruption may be that the SD card existsfile system error Or contain bad sectors, or be infected by virus or malware, etc. Before repairing the SD card, you can use data recovery software to recover/extract the data in the SD card, the following is a specific introduction.

I. Use Renee Undeleter to recover/extract Android SD card data

1. What is Renee Undeleter?

Rene.E Laboratory ™ data recovery software It is a software specially used to restore system data files. When you accidentally delete important files, empty the recycle bin, or format the disk/storage, you can use this tool to retrieve the lost data. The software covers four functional modules, including file recovery, format recovery, partition recovery and image creation, which can help you solve all data loss problems in an all-round way. In addition, the software also uses powerful fingerprint technology and file system reconstruction technology, which can bypass the damaged block (Block) in the SD card and rebuild the file system of the SD card, helping you retrieve the intact data files in the SD card to the greatest extent. Very convenient.
Hot Topic - ADsRenee Undeleter – Simple & Powerful Software for Data Recovery

Easy to use Recover data by 3 steps;

Multiple scan modes Fast partition scan, whole partition scan and whole disk scan;

Supported file types Image, video, audio, text, email and so on;

Image creation Create a partition image to read and back up data;

Supported devices SD card, SDHC, SDXC, USB flash drive, hard disk and computer.

Easy to use Recover data by 3 steps;

Multiple scan modes Fast partition/whole partition/whole disk scan;

Supported devices SD card/USB/hard disk.

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2. How to use Renee Undeleter to recover/extract Android SD card data?

As a professional data recovery software, Renee Undeleter not only has comprehensive functions, but also is very simple to operate. The specific operation steps are as follows:
Step 1: Download, install and run Renee Undeleter, remove the SD card from the Android phone, and connect it to the computer through a card reader. Select the (File Recovery) option in the main interface (if the scanning result is not satisfactory, please try (Format Recovery) and (Partition Recovery)).

Note: Do not install Renee Undeleter in the disk where data is lost to avoid data overwriting.

Select file recovery options
Data recovery function introduction:

File Recovery – Quickly retrieve files lost due to accidental deletion or emptying the recycle bin.

Formatted Recovery – Quickly recover files lost due to inaccessible or formatted partitions.

Partition Recovery – Analyze and get partition information and perform a full scan of the entire partition.

Create Mirror – You can create a mirror image for a partition to back up the current partition state.

Step 2: Next select the Android SD card partition. After the selection is complete, click (Next).
Select the SD card location to restore
Step 3: After that, select the scan mode in the “Scan Mode” interface, namely (Quick Scan) mode and (Deep Scan) mode. You can choose to use it according to your recovery needs. Choose (Quick Scan) to save time, and (Deep Scan) to restore older data.
Execute a quick scan command
Step 4: Next, in the advanced setting interface, you can customize the file type to be restored. If you are not sure, please select (default setting), select Finish and click (Next).
Select the file type to recover
Step 5: Then wait for the scan. The scan time will depend on the size of the SD card memory. If the SD card memory is large, the scan time will also need to be longer.
scan SD card
Step 6: After the scan is finished, an interface for previewing the scan results will appear. You can double-click the file to preview it, then check the target file to be restored, and click the (Recover) button to complete the content recovery.

Note: It is recommended to save the recovered/extracted files in other partitions, not in the original SD card, to avoid data overwriting.

restore file interface

II. How to fix a damaged Android SD card?

1. Check and fix system file errors on the SD card

When the SD card is damaged, you can connect the SD card to the computer through a card reader, and then use the file system error checking function of the Windows system to check and repair the SD card.
The specific operation steps are as follows:
Step 1: Connect the SD card to the Windows computer through a card reader.
Step 2: Open the file explorer, right-click on the SD card, select (Properties) > (Tools), and click (Check) in the “Error checking” column.
Check for SD card file system errors
Step 3: Click (Scan and Repair Drive). If errors are found, restart the computer to repair the file system. After the drive is repaired, eject the SD card and reinsert it into the Android phone to check if the problem is resolved.
scan and repair drive

2. Use chkdsk to repair damaged SD card

As long as the SD card is not physically damaged and the computer has a way to recognize the SD card, then you can use the chkdsk tool to fix logical errors. Although the SD card can be quickly repaired by using the chkdsk tool, this repair method may cause a lot of file data to be overwritten and a large number of important files will be lost. So before repairing the SD card, you need to firstRecover/Extract Important Files with Renee Undeleter .
The specific operation steps are as follows:
Step 1: Connect the SD card to the computer through a card reader.
Step 2: After the connection is successful, search for (cmd) in the computer search box, right-click (command prompt), and select (run as administrator).
search command prompt
Step 3: In the command prompt window, enter the command: (chkdsk H: /f) (H: is the drive letter of the SD card, /f is the repair parameter), and then press the (Enter) key. The repair process will take some time, depending on the severity of the damage and the size of the storage capacity. After the repair is complete, please exit the command prompt and check whether the problem is resolved.
Kind tips If this command does not repair the SD card, you can also try the (chkdsk H: /r) command, (/r) is also a repair parameter, which can find bad sectors and restore readable information. (/r) includes the functionality of (/f) with additional analysis for physical disk errors.