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SanDisk
forums.sandisk.com › usb flash drives › all other usb flash drives
Can you recover files from a corrupted usb? SanDisk Ultra flash drive - All other USB Flash Drives - SanDisk Forums
December 17, 2024 - I’ve tried plugging it into different USB ports and computers, but it’s not recognized or shows up as an unformatted drive. I had important files on it that I really need to recover. The USB drive is not accessible on my PC (Windows 11). It doesn’t show up with a drive letter in File ...
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Reddit
reddit.com › r/datarecovery › data recovery from a usb flash drive that does not get recognized
r/datarecovery on Reddit: Data recovery from a USB flash drive that does not get recognized
April 12, 2021 -

I (as the goto "IT-guy" for my friends and family) was tasked with restoring files from a USB flash drive.

AFAIK the flash drive is not damaged (at least not physically) so the issue seems to be on the software side (as far as I can tell).

The USB stick does get recognized by Windows (where it was used and the error occurred originally) and the behavior after plugging it in is as follows:

  1. USB Stick does get recognized as "UDisk" (see picture 1)

  2. USB Stick then is a plain USB Mass Storage device (see picture 2)

  3. After a while device manager will highlight it and it shows following events in the events tab (see picture 3)
    Edit: Just realized not everybody knows German. The two messages translate to:
    "device configured" and "device not started".

picture 1 picture 2 picture 3

Next step was plugging it into my Ubuntu PC as that typically gives more insight in what's really going on and that's also where I would have created an image of it with ddrescue (if I could have).However upon plugging it into my Ubuntu PC the USB stick doesen't even show up as a block device (as in there is no /dev/sXZ assigned to it).

After digging further into it i found out that it was indeed detected as indicated by dmesg

output of dmesg

it also seems to show up in the output of lsusb

output of lsusb

but as I said it is not beeing assinged a /dev/sYZ device so I'm kinda stuck at this point.

I did a bunch of googling, but mostly people who have similar behavior as I do are "just" missing the necessary module for their kernel (which I am definitely not missing as every other USB stick works just fine).I also stumbled upon some threads that seemed like it could've something to do with the port being USB 3.0 and the stick USB 2.0 (which it is btw), but I also tried plugging it into a USB 2.0 (and other 3.0) port(s) with the exact same result(s).

ATM I'm kind of at my wits end and don't know any further. Any help/pointers in the right direction are greatly appreciated.Also if the stick is really damaged to a point where I can't do anything (which as far as i can tell right now it seems it is) does anybody know what data recovery would cost and ideally also a good data recovery service in Germany?

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Why can't I see my USB drive in Windows 10?
Most likely the device has been physically damaged, the partition table is corrupt, or the drive has become RAW.
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cleverfiles.com
cleverfiles.com › all articles › usb repair tool: how to fix a broken flash stick in any situation
[SOLVED] How to Fix a Broken USB Stick and Recover Data
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cleverfiles.com
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[SOLVED] How to Fix a Broken USB Stick and Recover Data
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iBoysoft
handyrecovery.com › recover-data-from-usb-flash-drive-not-recognized
How to Recover Data From USB Drive That's Not Recognized
September 5, 2024 - Struggling with a USB drive that's no longer being recognized? This guide explains how to recover data from a USB drive that's not recognized.
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Microsoft Community Hub
techcommunity.microsoft.com › microsoft community hub › communities › products › windows › windows insider program
How to recover data from a corrupted flash drive on Windows PC? | Microsoft Community Hub
My USB flash drive has suddenly become corrupted, and I can’t access any of the files on it. I’m using a Windows 10 PC, and every time I try to open the drive, I either get an error message saying the drive needs to be formatted, or it just doesn’t show any of my files. I have some important documents and photos on the drive that I really need to recover.
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Clever Files
cleverfiles.com › all articles › usb repair tool: how to fix a broken flash stick in any situation
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This is how to fix a USB device that’s not recognized as readable with TestDisk: Download and extract TestDisk. Open testdisk_win.exe. Press Enter to create a new log file. Select your USB drive, then press Enter.
Published   February 5, 2025
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Secure Data Recovery
securedatarecovery.com › home › blog › what to do if your usb drive is not showing up
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hp.com › us-en › shop › tech-takes › how-to-fix-usb-device-not-recognized
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LinkedIn
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Rizonesoft
rizonesoft.com › home › downloads › usb repair
USB Repair | Rizonesoft
March 13, 2021 - To fix USB device errors in Windows, download and run the USB Repair tool. On the main interface, click on the Repair USB button. Reboot your computer and check to see if your problem is fixed.
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EaseUS
easeus.com › usb data recovery › how to recover files from not recognized usb flash drive
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December 12, 2025 - Formatting serves as a swift and efficient means to address issues with USB flash drives that are not being recognized, essentially restoring them to their factory settings. After safeguarding your files from the USB to a secure location, you might consider formatting them to resolve any issues hindering normal recognition. You can recover the formatted USB drive with EaseUS Data Recovery Wizard
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Reddit
reddit.com › r/techsupport › how to fix a flash drive if the computer doesn't recognize it?
r/techsupport on Reddit: How to fix a flash drive if the computer doesn't recognize it?
February 21, 2024 -

I've tried everything. First, I attempted to connect it to my phone (which has a USB-C), but the phone couldn't detect it either. I also removed the device from Device Manager, but that didn't help. I tried formatting it using Disk Management, but there are no partitions visible for the flash drive listed as Disk 2. I even attempted a low-level format using HDD LLF Low Level Format Tool, but the program couldn't detect it either. I understand that in this case, it might be easier to just replace it with a new one, but I still want to try to restore it somehow.

Top answer
1 of 4
8

How can I make the USB stick work again?

You can't.

If no computer can "see" it, you can't use your computer to fix it.

If you had time, skills and resources, you might be able to disassemble it, identify the faults and repair or replace the faulty components. This would probably cost more than purchasing a hatfull of new USB sticks.


Update: the following advice seems to have been helpful for some people

Assuming that the drive has been properly partitioned and formatted, then this USB drive probably still needs to be enumerated for this computer. Open Control Panel. Go through Administrative Tools to Computer Management. Under Storage, click on Disk Management. Locate the USB drive and it probably needs to have a drive letter assigned to it. Do so (Right click and change drive letter - make sure it's not in use at time). Should take care of the problem.

Obviously this is only useful on those occasions when the device does show up in Disk Management (you said it sometimes did).

2 of 4
11

I had a SanDisk Cruzer Edge 8GB USB that was recognized but I couldn't use it. The steps that worked for me were to basically:

  1. Go to: Control panel → System and Security → Administrative tools
  2. Open Computer Management.
  3. Go to Disk management on the left, and look at your drives.

Your problem will probably be that it is not allocated on your PC.

  1. Right-click the drive
  2. Click the text at the top
  3. You will assign it and give it a letter (Choose one that isn't already taken, e.g. D)

It will assign it to your PC and you will be able to use it.

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Quora
quora.com › How-can-I-fix-my-USB-if-it-is-not-being-recognized-by-any-computer-even-though-it-has-worked-before-Is-there-a-solution-that-does-not-involve-getting-a-new-one-or-returning-it
How to fix my USB if it is not being recognized by any computer, even though it has worked before? Is there a solution that does not involve getting a new one or returning it - Quora
Answer (1 of 3): If all else fails, and you still have one USB port, for about $15 you can buy a hub on EBay to plug into the working port and get a wide choice as to output. The basic one might be 4 USB ports out. I have seen up to 7 outputs such as HDMI, Ethernet, etc. On my current fleet that...
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1 of 5
65

Hi,

1.     Which troubleshooting steps have you tried?

2.     Does any other Universal Serial Bus controllers (USB) device get detected in the computer?

3.     What exactly happens when you connect the flash drive to the computer? Any error messages received?

4.     Any changes made to the computer prior to the issue?

5.     Does the device work in any other computer?

Method 1:

If you have not performed the steps mentioned in the following link then you may go ahead and do the same. Run the Hardware and Devices troubleshooter to start the automated troubleshooting services.

Refer the article provided below:

Open the Hardware and Devices troubleshooter

http://windows.microsoft.com/en-us/windows7/Open-the-Hardware-and-Devices-troubleshooter

Method 2:

Disable and re-enable all the Universal Serial Bus controllers (USB) controllers.

The USB controllers represent the USB ports in Device Manager.

To disable and re-enable the USB controllers, follow these steps:

a)     Open Device Manager.

b)     **http://windows.microsoft.com/en-US/windows7/Open-Device-Manager**

c)     Expand Universal Serial Bus controllers.

d)     Note: You might have to scroll down the list to find this item.

e)     Right-click the first USB controller under Universal Serial Bus controllers, and then click Uninstall to remove it.

f)      Repeat the above step for each USB controller that is listed under Universal Serial Bus controllers.

g)     Restart the computer. After the computer starts, Windows will automatically scan for hardware changes and

h)     Reinstall all the USB controllers that you uninstalled.

Method 3:

Let’s check if the USB drive gets detected in Disk Management.  Follow the steps given in the following article to do the same:

Check whether a Drive letter is assigned for USB drive, if not assign a drive letter and check if it helps.

**Change, add, or remove a drive letter**

 Hope this information helps.

2 of 5
5

Found out that my USB stopped working because other USB works in the drive, but thank you so much for your help.

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MiniTool Power Data Recovery
powerdatarecovery.com › home › flash drive recovery › usb drive not recognized: fix guide and data recovery method
How to Fix USB Drive Not Recognized & Recover Data
July 24, 2025 - Have you ever found your USB drive not recognized by a computer? Clearly, this is an annoying thing since you'll lose access to all files and folders saved on that USB device. This post will show you how to recover data from an unrecognized USB drive with powerful data recovery software and fix the USB drive to make it accessible.
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Wikihow
wikihow.com › computers and electronics › computers › computer hardware › external storage devices › how to fix an unrecognized usb disk: mac & windows solutions
How to Fix an Unrecognized USB Disk: Mac & Windows Solutions
October 29, 2009 - If you notice any corrosion or gunk on the USB connector, you can try cleaning it using some electrical contact cleaner. It's inexpensive and available at most stores that sell electronic equipment. ... Plug the USB drive into another USB port.
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EaseUS
easeus.com › usb data recovery › pen drive not detected/recognized, how to fix [2026]
Pen Drive Not Detected/Recognized, How to Fix [2025]
Get full solutions for you to fix pen drive not detected error and repair not recognized/detected USB flash drive without losing any data. Then, free download EaseUS data recovery software to restore USB data.
Published   1 week ago
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7 Data Recovery
blog.7datarecovery.com › home › flash drive recovery › how to quickly fix a usb flash drive that is not recognized
How to Fix a USB Flash Drive That Is Not Recognized on PC
April 16, 2025 - Disk Drill can identify a thumb drive that isn’t showing up and scan it, directly bypassing persistent error messages, file system corruption, and other logical damage. The free version allows you to scan and preview data for free, but recovery beyond 500 MB will require Disk Drill PRO. A USB that’s not recognized is a sign that logical or physical damage is present.