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Repair a Corrupted Pen Drive/SD Card for Free

This article will provide you with three free methods to repair a corrupted pen drive or SD card without losing any data. Follow to see how to repair a corrupted pen drive, USB flash drive, SD card, and more with simple clicks now.

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Table of Contents

Quick Start to Recover Data from a Corrupted Pen Drive

  1. Step 1. Connect the Corrupted Pen Drive to scan.
  2. Connect your pen drive to your computer and run EaseUS pen drive recovery software.
  3. Step 2. Scan the pen drive and preview files by double-clicking them from the result.
  4. Step 3. Recover pen drive files and save.
  5. More details...

What to Do When A Pen Drive or SD Card Gets Corrupted?

Are you looking for a way to repair a corrupted pen drive, SD card, or hard drive on your PC, camera or mobile phone? Not sure what to do when a storage device suddenly stops working, gets corrupted, or even becomes unrecognized by your PC? 

Relax! Here are three doable things for you if you don't know what to do when you are faced with pen drive, USB or SD card corruption. These little tricks are easy to perform but powerful enough to resolve commonplace malfunctioning symptoms.

Tip 1. Try to connect your device to a nearby computer

If there is an idle computer near you, try it at least once, especially it's about the USB device not recognized issue. This way helps exclude an unsuccessful connection problem.

Tip 2. Change the drive letter and path

A drive letter confliction may present you with a nondetectable device, too. You can access to Windows Disk Management (This PC/My Computer -> Manage -> Disk Management).

Try to assign a new drive letter to it. With a unique drive letter of itself, the connected drive should show up normally again.

change drive letter and path to repair corrupted pen drive

Tip 3. Update device driver

When you find no trace of the drive you've correctly connect in neither the Windows File Explorer nor Windows Disk Management, you might step further to Windows Device Manager (This PC/My Computer -> Manage -> Device Manager).

open device manager

Expand the Universal Serial Bus controllers and right-click on each Generic USB Hub to update the driver, until the device appears on the PC again.

update driver to fix a corrupted pen drive

Tip 4. Turn to Manual Pen Drive Repair Service

If you find it hard to repair a corrupted pen drive for you, you can turn to pen drive repair experts. EaseUS data recovery services provide 1 on 1 remote assistance service to fix USB/HDD/SSD issues, recover partitions, wipe data, etc.

EaseUS Disk Repair and Recovery Services

Click here to contact our experts for a free evaluation

Consult with EaseUS data recovery experts for one-on-one manual recovery service. We could offer the following services after a FREE diagnosis.

  • Fix HDD, SSD, external hard drive, and USB flash drive errors, and restore data from all RAID levels
  • Recover lost partitions that cannot be restored by data recovery software
  • Fix disks that cannot be read or accessed because of bad sectors
  • Fix disks that become GPT-protected partitions
  • Wipe data, unformat hard drive, Install/uninstall software or driver, etc.

If all these quick fixes don't work for you, don't worry. In the following paragraphs, you'll find three pen drive repair tools to repair a corrupted pen drive/SD card.

Top 3 Pen Drive Repair Software

When a pen drive, USB flash drive, or SD card gets corrupted, it won't be able to be detected by a computer and the data on it could become inaccessible. You'll notice that the pen drive or SD card will not respond to any operations. So, how to fix this problem and repair your pen drive or SD card? Here, you'll find three universally applied pen drive repair tools, together with a piece of EaseUS Data Recovery Wizard, in order to perform a complete pen drive/SD card recovery after corruption.

The recommended tools are working pretty much the same regarding effectiveness, so choose the one that suits your needs the best.

No.1 Native Windows Check Disk Tool

Granted that there are logical errors with the USB pen drive, you can easily fix it by repairing the file structure. Windows has one great tool for you to initiate a check and repair.

Step 1. Make sure that the problematic pen drive has connected to the computer. Open Windows File Explorer, right-click the removable disk and choose "Properties".

Step 2. Go to the "Tools" tab and then the "Check" button.

check bad sectors to fix corrupted pen drive

Step 3. Check both checkboxes in front you: [1] Automatically fix file system errors", and [2] Scan for and attempt recovery of bad sectors.

Step 4. Click "Start" and wait. Close the window after the scanning and repairing process ends.

No.2 Windows Command Prompt - CHKDSK

The CHKDSK command is a highly effective method for you to repair a corrupted, damaged, and non-working USB flash drive, pen drive, SD card, or hard drive partition. It can also be applied to repair a corrupted external hard drive or HDD/SSD with ease.

Note that this fix can cause serious file loss issues while running the command. So please make sure to access and save your data to another safe location with the EaseUS Data Recovery Wizard offered below before running CHDKSK.

Step 1. Connect the problematic storage device to your PC.

Step 2. Click on Start and type: cmd, hit Enter to open the Command Prompt.

Step 3. Type: chkdsk h: /f /r /x or chkdsk h: /f and hit Enter. (h: shall be the drive letter of your pen drive/sd card.)

Fix and repair corrupted pen drive/SD card.

Wait for the process to complete. Then you'll get your wanted healthy pen drive, USB, or SD card back.

No.3 Free Computer Fixing Tool from Third-party

If command line is not your ideal choice, you can apply this command-line alternative tool - EaseUS CleanGenius. Use this one-click tool to fix the file system error on your hard drive.

Step 1. Download EaseUS CleanGenius on your computer for free.

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

select the file showing option

Step 3. Go to "Choose drive" and select the drive with a file system error. Check the "Check and fix file system error" option and click "Execute".

fix file system

Step 4. Wait the EaseUS CleanGenius completes the repairing process. After that, click the "here" to view the result.

fix file system

How to Recover Data from A Corrupted Pen Drive

Hopefully, most corruption problems resulting from logical errors have a data recovery solution. If you see the pen drive displaying error messages like "you need to format it before you can use it", "invalid file system RAW", "unallocated", etc., you can happily use professional free data recovery software to retrieve data from it, even it's inaccessible at the moment. If your files and data saved on the corrupted device are more than 2GB, you'll need to upgrade this free pen drive recovery software to EaseUS Data Recovery Wizard Professional in order to restore unlimited data. 

 Download for Win Recovery Rate 99.7%
 Download for Mac Trustpilot Rating 4.7

These steps show you how to get back lost files from a pen drive. You can also apply the method for all Windows-compatible storage drives.

Step 1. Run USB Data Recovery Software

Connect the USB drive or pen drive to your computer and launch EaseUS USB data recovery software on your PC. Select the drive which is labeled as a External drives, and click "Scan" to start looking for lost files.

Select USB/pen drive to scan and find lost files

Step 2. Scan and Search Lost Files on a USB Drive

EaseUS Data Recovery Wizard will thoroughly scan your USB flash drive/pen drive and find all your lost data on it. When the scan process completes, use the Filter feature to find wanted files.

Scan USB flash drive/pen drive to find lost files

Step 3. Restore All Lost Files from USB

A double-click will allow you to preview the files. Select the target files to restore and click "Recover" to save them to a secure location on your PC or other external storage devices.

Restore lost USB/pen drive data

Additional Fix for A Corrupted Pen Drive - Format

After getting back important data from the corrupted storage device, you can now directly format it to repair the corrupted or damaged pen drive or SD card.

Step 1: Connect the pen drive/SD card to your PC.

Step 2: Right-click on This PC/My Computer and click on Manage.

Step 3: Click Disk Management.

Step 4: Right-click the corrupted or non-working pen drive/SD card and select Format.

Step 5: Reset the drive letter, file system, and other necessary settings for the pen drive or SD card.

Step 6: Click OK to finish the process.

format corrupted pen drive

You can also watch this video guide to check how to recover USB data in 2 ways.

How to Repair Corrupted Pen Drive FAQs

If you still have problems, read on. These USB repair questions and answers can do you a great favor.

1. How do I fix a corrupted USB drive?

Follow the steps below to repair USB drives:

  • Reinstall USB drivers
  • Repair USB errors with a manual repair service
  • Run CHKDSK to repair corrupt USB flash drives
  • Use a third-party fixing tool to fix USB errors

2. How to repair a corrupted pen drive with CMD?

Here is how to fix a USB drive in CMD using the CHKDSK command:

  • Run Command Prompt as administrator
  • In the CMD console, type chkdsk X: /r (replace X with the drive letter of your USB drive), and press Enter
  • Wait for CHKDSK to finish scanning and repairing the USB drive

3. How can I recover my corrupted pen drive without formatting?

Follow the steps to recover a corrupted pen drive without formatting:

  • Download and install EaseUS Data Recovery Wizard
  • Select the USB drive that you lost the files
  • Click the scan button to find lost files
  • Preview the files and click the Recover button

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Updated by Cedric

Cedric Grantham is a senior editor and data recovery specialist of EaseUS. He mainly writes articles and how-to tips about data recovery on PC and Mac. He has handled 10,000+ data recovery cases and is good at data recovery of NTFS, FAT (FAT32 and ExFAT) file systems, and RAID structure reorganization.

Read full bio

Written by Tracy King

Tracy became a member of the EaseUS content team in 2013. Being a technical writer for over 10 years, she is enthusiastic about sharing tips to assist readers in resolving complex issues in disk management, file transfer, PC & Mac performance optimization, etc., like an expert.

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