How to recover virus files in USB?

USB drives are incredibly convenient for storing and transferring files. Unfortunately, they can also easily pick up malware and viruses. If your USB drive becomes infected, the malware can damage or encrypt files stored on the drive, rendering them inaccessible.

The good news is that in many cases, you may be able to recover your files. However, it requires some technical know-how and the right recovery tools. This guide will walk you through the steps for recovering files from a USB drive infected with viruses.

How do USB drives get infected with viruses?

There are a few common ways USB drives can become contaminated with malware:

  • Plugging your USB drive into an infected computer. Any viruses or malware residing on that computer can easily spread to the connected USB drive.
  • Opening infected files directly from the USB drive. Even if you don’t save the infected file onto the USB, it could still deposit malware.
  • Executing autorun files. Many viruses will autorun malicious files when a USB is inserted into a computer. Never open files that automatically run from a USB.
  • Cloned USB drives. Some public computers have cloned virus-infected USBs. Using such a public USB stick can infect your own drive.

The point is, it’s easy for USB drives to pick up viruses from infected computers. When that happens, your files are at risk. So it’s essential to be very careful when using public computers and inserting your USB into unknown devices.

How can you tell if a USB drive is infected?

Here are some signs that indicate your USB drive may have been compromised by malware:

  • You can’t access files that you know were saved on the USB drive
  • Your antivirus detects malware or viruses on the USB drive
  • Files on the USB have been encrypted, corrupted, or renamed strangely
  • The USB drive’s light is blinking rapidly even when not saving files
  • The USB takes much longer to open files or save data
  • Odd new files appear on the USB that you don’t recognize
  • The USB drive’s capacity seems smaller than normal

If you notice any of these issues, it’s possible your USB has been infected and needs to be disinfected.

Steps to clean and restore infected USB drive files

If you suspect your USB drive has been compromised by a virus, follow these steps:

1. Disconnect the infected USB drive

First, disconnect the USB from any computer it is plugged into. You don’t want the malware spreading back to the computer.

2. Scan the USB drive with antivirus software

Use quality antivirus software to scan the USB drive. This may detect and remove some viruses. It’s best to complete scans with multiple antivirus programs like Malwarebytes, Norton, and McAfee to cover more threats.

3. Backup files from the USB drive

After scanning the USB, backup any important files you need to save from the drive. Copy them to another device like a computer hard drive or another USB.

4. Format the USB drive

Go to My Computer (Windows) or Finder (Mac), right-click the infected USB drive, and choose “Format.” This will wipe all data from the drive and remove any malware. However, it will also delete your files. This is why you backup first.

5. Recover files using data recovery software

Once you have formatted the USB drive, you can attempt to recover any needed files using data recovery software. Programs like Stellar Data Recovery, EaseUS Data Recovery, and Recuva scan the drive and restore damaged and deleted files. Look for a tool that supports your specific operating system.

6. Re-scan and use the cleaned USB drive

With your files recovered and malware removed, it’s a good idea to re-scan the USB drive with your antivirus software. If no threats are detected, the USB should now be clean and safe for transferring files again.

Tips for avoiding infected USB drives

Here are some ways to minimize the risks of getting malware on your USB drive:

  • Don’t use public computers to access USB drives
  • Keep your antivirus software updated on all computers
  • Always safely eject the USB drive before removing it
  • Don’t open random files or autorun files from USBs
  • Scan USBs occasionally with antivirus software as maintenance
  • Only connect USBs to trusted devices

Following security best practices will help keep your USB drives virus-free and protect your important data.

Can lost files be recovered after formatting USB drive?

Yes, it is often possible to recover lost files even after formatting a USB drive. Here is how it works:

When you format a USB drive, the file system and structure are erased from the drive. However, the actual data contained in the old files typically isn’t removed right away. It still physically resides on the disk, even though the drive appears empty.

Data recovery software utilizes this fact to scan the formatted USB drive and restore the files. The programs look for traces of the old deleted file system and reconstruct the files.

However, there are a few caveats:

  • The longer a drive has been formatted, the lower the chance of file recovery. New files written to the disk overwrite the old data.
  • USB flash drives are less recoverable than hard disk drives because data can be quickly overwritten.
  • The success rate depends on the recovery software’s capabilities.
  • The more you used the USB drive after formatting, the worse the chances. Continued usage writes new data over your deleted files.

So in summary – yes lost files can often be recovered after formatting, but results vary based on usage factors. Your best bet is to recover needed files immediately after formatting using a quality data recovery tool. The sooner you scan for lost files, the better your chances.

What is the easiest way to remove a computer virus from a USB flash drive?

Here is an overview of the easiest process for removing a virus from a USB flash drive:

  1. Unplug the infected USB drive from your computer
  2. Use antivirus software to run a full scan of the USB drive
  3. Quarantine or delete any infected files detected
  4. Backup any important files you need from the USB drive
  5. Format the USB drive to delete all data and malware
  6. Run antivirus scans again on the formatted USB
  7. Use data recovery software to restore your files back to the clean USB

This process will wipe the USB drive completely, removing any viruses or malware. Formatting the disk ensures everything is erased. Backup up your files first before formatting allows you to safely recover those files back to the cleaned USB drive after.

The key is using quality antivirus and data recovery software. Reliable solutions like Malwarebytes and Stellar Data Recovery make it easy to scan, wipe, and restore USB flash drives. The whole process can often be completed in an hour or less.

Just remember to never save recovered files back to the USB before formatting. Otherwise, you risk reinfecting it with viruses again from those files. By following these steps, you can remove viruses and make your USB drive safe for use once more.

Can you recover photos from a formatted USB drive?

Yes, it is often possible to recover deleted photos from a formatted USB flash drive. Here is an overview of how photo recovery works:

When you format a USB drive, the file structure and system data is removed from the disk, but the actual photo files are not immediately overwritten. They still physically exist on the USB flash memory in most cases.

This allows data recovery tools to scan the formatted drive and restore the previously deleted photos. The software searches for traces of the old photo files and attempts to reconstruct them.

However, there are some factors that affect photo recovery success rates:

  • The less the USB flash drive is used after formatting, the better. More usage means more old data is overwritten.
  • Faster recovery is more successful. The longer you wait, the more likely new data is written over your photos.
  • Higher-quality data recovery software improves results. Advanced algorithms yield better photo file recovery.
  • The way the USB was formatted impacts recovery. A full format has lower chance than a quick format.

Overall, recovering photos from a formatted USB drive is often successful, particularly if you run data recovery immediately after formatting and use reputable software. Following the proper steps maximizes your ability to get those photos back.

What is the best free software to recover files from USB?

Here are some of the top free USB file recovery programs available:

Software Key Features
Recuva Intuitive interface, deep scan capabilities, supports many file types
TestDisk Advanced options for experienced users, recovers lost partitions
Photorec Specializes in photo recovery, recovers various media files
Disk Drill Recovers 200+ file types, has quick and deep scan modes

These free data recovery tools provide robust USB file recovery capabilities, often rivaling paid solutions. Key factors when choosing software are the number of supported file types, scanning options like regular vs deep scanning, and overall ease-of-use.

Recuva strikes a great balance of an intuitive interface paired with versatile file type support. Photorec is the best free solution tailored specifically for photo recovery. For extremely advanced recovery, TestDisk has the most customization options. Disk Drill provides a free version with strong core data recovery features.

Any of these free software tools can help you successfully recover lost files from a USB drive in many situations. They provide an effective way to restore important documents, photos, and other file types you may fear were lost forever. Just be sure to choose a reputable free data recovery program to avoid bundled junkware.


Recovering files from a virus-infected USB drive is certainly possible if you use the right software tools and techniques. The key steps include:

  • Scanning the USB with quality antivirus programs to detect and remove malware
  • Backing up important files from the infected USB drive first
  • Formatting the USB drive to wipe all data and viruses
  • Using data recovery software after formatting to restore your needed files
  • Taking precautions like avoiding public computers to protect your USBs

With the right data recovery solution, you can salvage your photos, documents, and other personal files from a corrupted USB drive in many cases. Just be sure to work quickly before too much new data overwrites your lost files.

Following these tips will help you successfully clean and restore valuable files from a USB flash drive infected by viruses or malware. Be diligent about scanning and formatting drives that show signs of infection. And utilize free recovery software for recovering your files safely once the USB has been wiped. With some effort, you can rescue those irreplaceable files and get your USB drive back to functioning normally again.