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7 Free USB Repair Tools: Repair Flash Drive & Recover Data

A USB flash drive repair tool can help you fix corrupted, damaged, and unrecognized USB. This article not only introduces various USB repair tools to you, but also shows you how to use FonePaw USB Data Recovery to efficiently recover files from a corrupted flash drive.
author Carrie Murray
date Sunday, April 27, 2024

A USB drive is indeed handy but vulnerable in some ways, somehow it's malfunctioning all of a sudden. When your USB drive becomes corrupted, unrecognized, or unreadable due to virus attacks, file system corruption, hardware malfunctions, or improper shutdowns, you may use USB repair tools to fix it and get back the necessary data and files in it.

Therefore, this post will not only cover the 7 best free USB repair tools to get your flash drive back to normal but also provide you with a USB drive data recovery tool to extract files from the problematic flash drive.

Best Free USB Repair Tools

Top 7 Free USB Flash Drive Repair Tools

The approaches to repairing a pen drive fall into two categories:

  • Utilize system-provided USB repair tools to detect and fix USB errors.
  • Formatting (It's essential to ensure you have a backup of the crucial data on the USB before formatting to prevent data loss.).

Here we will introduce the 7 best free USB repair tools covering the above 2 approaches, you can choose one pen drive repair tool according to your needs.

No.1 Disk Error Checking (Windows)

Windows computers are equipped with a built-in USB repair tool known as Disk Error Checking. This default utility can scan and fix file system errors of damaged sectors on your computer. So far, it can troubleshoot bad partitions and fix a corrupted pen drive. Let's get to know how this free USB repair tool works.

  1. Plug the USB drive into your computer running Windows 11/10/8/7.
  2. Find the USB drive in File Explorer (Windows + E) > This PC, right-click on it and select Properties.

    Right Click USB in File Explorer

  3. Under the Tools tab, click Check in the Error Checking section.

    Check USB with Windows Default Tool

  4. A new pop-up window appears. Click Scan and repair drive to scan the USB drive and repair USB drive errors if you can find any.

    Scan Your Pen Drive

  5. The tool will scan the USB drive and repair USB drive errors if it can find any.

No.2 CHKDSK Command (Windows)

CHKDSK is a Windows command that checks and fixes file system errors. With specific parameters, it can repair and restore readable data from corrupted USB drives. While it may involve codes, the following steps simplify the process of using this free pen drive repair utility for beginners.

  1. Enter "cmd" in the search bar. Right-click Command Prompt from the results, and select Run as administrator.

    Run Command Prompt as Administrator

  2. Plug your USB drive into the computer and remember the drive letter of the corrupted USB drive.
  3. Assume F: is the USB drive letter, and enter chkdsk F: /f /r /x in the Command Prompt.


Understand the CHKDSK parameters:
  • /f: Fix errors in the USB drive.
  • /x: Dismount the USB drive.
  • /r: Locate bad sectors on the flash drive and recover data from it.

No.3 HP USB Disk Storage Format Tool (Windows)

Launched by HP in 2014, the HP USB Disk Storage Format Tool is a recommended USB repair tool for formatting pen drives on Windows. This free USB fixer offers compatibility with nearly all flash drives utilizing FAT, FAT32, and NTFS file systems. Below is how it works.

  1. Download the HP USB Disk Storage Format Tool package and run the tool as administrator.
  2. Connect your corrupted flash drive to your computer.
  3. Launch the tool. Select the drive in the "Device" column in the software.
  4. Select the file system(FAT, FAT32, NTFS) that you want to format the USB drive to.
  5. Continue to select the "Format" options. You can tick "Quick Format".
  6. Click "Start". When the HP USB repair tool warns you that the process will delete all data on the USB drive, click "Yes" to proceed.

    HP USB Disk Storage Format Tool

No.4 Disk Utility (Mac)

Disk Utility is a built-in disk manager in macOS that works as a free USB fixer to examine and repair USB flash drives that are malfunctioning. You may use this USB repair tool to format your flash drive with the following steps:

  1. Boost your Mac into macOS recovery mode.
    • For Mac with Apple silicon: Turn on your Mac and press down the Power button until startup options show up. Then, click the Gear icon and select Continue.
    • For Mac with Intel chips: Turn on your Mac and press down Command + R until entering macOS recovery mode.
  2. Select Disk Utility and click Continue to launch it.

    Run Disk Utility Mac

  3. Plug your USB drive into the Mac and choose the device from External on the left panel.
  4. Select First Aid and click Run on the prompt to start checking the selected device for logical errors. Then, Disk Utility will automatically start repairing USB drive to normal status.

    Run First Aid on Disk Utility for USB Drive

No.5 TestDisk (Windows & Mac)

TestDisk is a free USB repair tool that works for Windows and macOS. It features powerful functions including fixing problematic partitions, undeleting data from a hard disk, rebuilding a boot sector, and supporting all types of filesystems.

However, TeskDisk doesn't have a graphical user interface, so it could be difficult to use in an old-school command prompt. To fix the corrupted flash drive, let's follow the instructions below.

  1. Download TeskDisk to your computer and run it as an administrator. Then, connect your USB to the computer.
  2. Select Create to record information and choose your USB device to Proceed.
  3. Select the partition table type and press Enter to go on. Then, select Analyze to scan your device and examine partition problems.
  4. Choose Quick Search to scan or Deeper Search after the first routine scan is completed.
  5. TeskDisk will show all the readable partitions in the list. Now, click Write to rewrite the partition structure and see whether your USB drive is successfully fixed.

    TestDisk Repair USB Drive

No 6. MalvaStyle USB Repair (Windows)

The MalvaStyle USB Repair is a utility designed for formatting USB drives to FAT, FAT32, or NTFS file systems. It helps users to repair malfunctioning pen drives. Its simple interface and effectiveness make it a popular choice for repairing USB storage devices efficiently among HP PC users. Here's how to use this free USB repair tool:

  1. Install and launch the MalvaStyle USB Repair tool on your computer.
  2. Add your USB drive to the program.
  3. Click Repair and wait for the tool to format your USB drive.

    MalvaStyle USB Repair

No 7. AOMEI Partition Assistant (Windows)

AOMEI Partition Assistant stands out as a reliable USB repair tool, offering comprehensive solutions for various USB drive issues. From repairing corrupted or unreadable drives to managing partitions effectively, it provides user-friendly features to troubleshoot and optimize USB drives efficiently. See how it works:

  1. Install AOMEI Partition Assistant and connect your USB drive to your computer.
  2. Right-click on your USB drive on the interface.
  3. Click Format Partition and wait for it to repair your USB drive.

    AOMEI Partition Assistant

[Must Read] How to Repair USB Without Losing Data?

Typically, we repair corrupted USB drives to salvage important data. However, many USB repair tools just format the drive while repairing, resulting in data loss. To safeguard your important files, consider using a USB data recovery tool before applying a repair utility.

FonePaw USB Data Recovery is what you need. It can easily recover files from a formatted USB drive, as well as from a corrupted flash drive. And FonePaw offers FOREVER FREE scanning and a preview of the data that can be recovered on your USB flash drive. With its user-friendly interface and powerful recovery capabilities, FonePaw is a reliable solution for retrieving your valuable files.

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It takes only 3 steps to get back files from a USB drive with the FonePaw utility.

Step 1. Launch FonePaw USB Data Recovery. Choose the file types to scan, and tick your USB drive. Click Scan.

Scan USB Drive

Step 2. Preview the scan result, and select the files you want to recover.

Check Scan Results

Step 3. Click Recover to extract the files to your computer.

Recover Files from USB Drive

FAQs about Repairing USB Drives

Is there any USB flash drive repair tool online?

If you're looking for an online USB fixer, I'm afraid that there isn't one. Since a corrupted USB needs to be scanned and checked for partition errors, that's impossible to do over the cloud nowadays. If you mean the way you don't need to go offline to a local repair store, then you can repair your USB online on your Windows or Mac with the help of the best USB repair tools introduced above.

Why can't I see my USB drive in Windows 10/11?

If you cannot see your USB in Windows File Explorer, there is likely a problem with your USB (like showing up as unallocated space under Disk Management) or your system settings for USB.

Here are some methods to fix an unreadable USB flash drive:

  1. Update unallocated USB drivers and create a new volume;
  2. Change the USB drive letter;
  3. Change the USB connection;
  4. Take your USB to a device repair center for manual repair.

Can a damaged USB be repaired?

Yes. There is a possibility to repair a slightly damaged USB drive with the above 7 best free USB repair tools. If the data on the USB is valuable and you're unable to recover it yourself, you can seek professional data recovery services. They have specialized tools and expertise to deal with various types of damage.


Above we provided you with the 7 best USB repair tools. You can choose one of the USB fixers that best fits your computer and flash drive. You should note that repairing a USB flash drive may have to format it, so data loss is usually inevitable. But don't worry, you can use FonePaw USB Data Recovery to retrieve data from the corrupted USB drive before/after the repair.

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