Fix Corrupted Android SD Card without Losing Data - Ultimate Guide – Rene.E Laboratory Support Center

2024-08-19 John Weaver Senior Program Developer

Summary

Master how to fix my phone SD card without data loss. Discover expert recovery tips and effective fixes for unreadable or unrecognized cards.

Table of contents

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

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

II. How to fix a damaged Android SD card?

1. Check and fix system file errors on the SD card
2. Use chkdsk to repair damaged SD card

The cause of Android SD card corruption may be a file system error , bad sectors , or infection by viruses or malware . Before repairing the SD card, use data recovery software to extract the data.

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

1. What is Renee Undeleter?

Renee Undeleter is designed to restore system data files. It helps retrieve lost data after accidental deletion, recycle bin emptying, or disk formatting. The software includes four modules: Fast Partition Scan , Whole Partition Scan , Whole Disk Scan , and Image Creation , addressing all data loss issues comprehensively. It employs advanced fingerprint technology and file system reconstruction to bypass damaged SD card blocks and restore intact data files efficiently.

Hot Topic - ADs Renee 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.

▽ Free Trial (Win) ▽ Free Trial (Mac)

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 via a card reader. Select the [ Fast Partition Scan ] option in the main interface. If the result is unsatisfactory, try [ Whole Partition Scan ] or [ Whole Disk Scan ] .

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

fast partition scan with Renee Undeleter

Data Recovery Functions:

Fast Partition Scan – Retrieve files lost due to accidental deletion or emptying the recycle bin.
Whole Partition Scan – Recover files from inaccessible or formatted partitions.
Whole Disk Scan – Perform a full scan of the entire partition and analyze partition information.
Image Creation – Create image to back up the current partition state.

Step 2 : Select the Android SD card partition and click ( Next ).

Step 3: Select the scan mode in the “Scan Mode” interface: ( Fast Scan ) to save time or ( Deep Scan ) to restore older data, based on your recovery needs.

Step 4 : In the advanced setting interface, you can customize the file type to be restored. If you are unsure, please select the ( Default Settings ) and click ( Next ).

select the file types in fast partition scan

Step 5 : Wait for the scan to complete. The duration will vary based on the size of the SD card; larger memory will require more time.

select the target files to recover in fast partition scan

Step 6 : Once the scan is complete, a preview interface will appear. Double-click the file to preview it, select the target file for restoration, and click the ( Recover ) button to complete the recovery process.

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

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.

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 “Error checking”.

Step 3 : Click ( Scan and Repair Drive ). If errors are found, restart the computer to repair the file system. After restoring the drive, eject the SD card and reinsert it into the Android phone to check if the problem is resolved.

2. Use chkdsk to repair damaged SD card

If the SD card is not physically damaged and the computer can recognize it, you can use the chkdsk tool to fix logical errors. However, this method may overwrite data and result in the loss of important files. Therefore, before repairing the SD card, recover/extract important files with Renee Undeleter .

Step 1 : Connect the SD card to the computer through a card reader.

Step 2 : Search for ( cmd ) in the search box, right-click ( command prompt ), and select ( Run as administrator ).

Step 3: In the command prompt, enter: chkdsk H: /f (H: is the SD card’s drive letter, /f is the repair parameter), then press Enter . The repair duration depends on the damage severity and storage size. Once complete, exit the command prompt and check if the issue is resolved.

Tips If this command does not repair the SD card, try the chkdsk H: /r command. The /r parameter finds bad sectors and restores readable information, including the functionality of /f with additional physical disk error analysis.