8 Ways to Fix Unreadable External Hard Drive 2021

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8 Ways to Fix Unreadable External Hard Drive 2021 – External hard drives are popular because of their large capacity and flexibility or can be carried anywhere. However, have you ever experienced a situation where the external hard drive is not read in Windows when you connect it to a computer or laptop? Actually, it is a common problem that many users complain about.

8 Ways to Fix Unreadable External Hard Drive
8 Ways to Fix Unreadable External Hard Drive

8 Ways to Fix Unreadable External Hard Drive on Laptop PC

Why does this unreadable external hard drive case appear? In general, there are many causes that can cause this problem to occur, such as file system errors, out-of-date drivers, lost partitions, corrupted USB ports, etc. In this post, we will give you some practical methods how to fix an unreadable external hard drive.

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1. Make sure the external hard drive gets enough power

Make sure the external hard drive gets enough power
Make sure the external hard drive gets enough power

Although some external devices such as USB drives may be able to draw sufficient power from your computer’s USB port, other drives especially larger drives such as external hard drives may require quite higher power to power on.

So when the external hard drive is not receiving proper power from the computer, it can cause the external hard drive to be unreadable on the computer. For that make sure your computer has enough power supply.

2. Try Another USB Port Or Another PC

Try Another USB Port Or Another PC
Try Another USB Port Or Another PC

If the external hard drive still doesn’t work, unplug it and try another USB port. It’s possible that the port in question failed. If it’s plugged into a USB 3.0 port, try a USB 2.0 port. If it’s plugged into a USB hub, try connecting it directly to a PC instead. You can also try it on another computer.

Checking the hardware connection is very important because if something goes wrong with the USB port or USB cable, the external hard drive may not be read.

3. Check External Hard Drive In Disk Management

If you are still experiencing an external hard drive connected but not reading on my Windows computer, you can open Disk Management to check its status.

Case 1: External Hard Drive Becomes Unallocated Space

If the external hard drive is displayed as Unallocated, it is certain that the hard drive will not appear in File Explorer. To make it visible, you need to create a new volume with unallocated space.

External Hard Drive Becomes Unallocated Space
External Hard Drive Becomes Unallocated Space
  1. Right-click the unallocated space. Select  New Simple Volume and click  Next.
  2. Specify the volume size. Fill in the Drive Letter and Path sections. Click  Next to continue.
  3. Complete Format Partition. Click  Finish to confirm in the New Simple Volume Wizard.

Case 2: External Hard Drive Doesn’t Have Drive Letter

The external hard drive will also not appear without the drive letter. So, assign a drive letter, if it’s not in Disk Management.

External Hard Drive Doesn't Have Drive Letter
External Hard Drive Doesn’t Have Drive Letter
  1. Right-click the external hard drive and select  Change Drive Letter and Paths from the menu.
  2. In the pop-up window, click  Add.
  3. Assign the drive letter and click  OK  to confirm the changes.

Case 3: External Hard Drive Not Initialized

You can complete the initialization this way:

  1. Right-click the external hard drive, which will show as  Unknown, Not initialized disk.
  2. Click Initialize Disk from the context menu.
  3. Then, select MBR or GPT for the partition type. Click  OK  to confirm.

Alternatively, you can use  MiniTool Partition Wizard to initialize the disk to MBR or GPT disk easily.

4. Check And Update Device Drivers

Sometimes, Windows encounters a driver issue that makes the device unrecognizable. You can check device drivers in Device Manager to see if they need updating.

Check And Update Device Drivers
Check And Update Device Drivers
  1. Open  Device Manager in a way according to your Windows system.
  2. Find and expand  Disk drives.
  3. Right-click the target drive and select  Update driver or  Uninstall device. Follow the related instructions to complete the process.

5. Clean Disk And Start From Scratch

To regain the full capacity of your drive, you will need to run the Windows “clean” command, which will return the drive to a completely unformatted state. This will erase everything on it, so make sure there is no valuable data on your external hard drive.

Clean Disk And Start From Scratch
Clean Disk And Start From Scratch
  1. Open the Start menu then type ” diskpart “, and press Enter.
  2. When the Command Prompt appears, type “list disk” and press Enter to see the disks plugged into your system.
  3. If you see the drive in question appear, pay close attention to its size, note its name (say, “Disk 2”), and run the “ select disk 2 ” command, using the disk you want to clean.
  4. Finally, type “ clean ” and press Enter. This will erase the disk.

6. Update Windows System To The Latest

You can also try installing the latest Windows to fix an unreadable external hard drive, such as updating device drivers.

Update Windows System To The Latest
Update Windows System To The Latest
  1. Type  Windows Update in the Windows search box and press Enter.
  2. Click  Check for updates and wait a few moments.
  3. Follow the next process as requested.

7. Reinstall USB Controllers

Try reinstalling the USB controllers in Device Manager with the following steps.

Reinstall USB Controllers
Reinstall USB Controllers
  1. Go to Device Manager.
  2. Find and expand  Universal Serial Bus controllers. 
  3. Right-click the device and select  Uninstall device. Click  Uninstall in the pop-up window.
  4. Repeat this method to remove all devices under Universal Serial Bus controllers.
  5. Reboot the computer. Windows will automatically install the USB controller.

8. Remove And Test Bare Drive

If none of the options above work, you’ll need to remove the drive from its external enclosure and test the drive yourself. The component that converts that SATA drive to USB can fail, which means the drive could be fine if you plugged it in some other way. If you have a desktop PC available, you can open it up and plug the drive directly into your motherboard.

Otherwise, you can buy a new external SATA-to-USB adapter dock or cover, plug your empty drive into it, then connect it to your PC via USB. If it works, then your old enclosure (or power supply) is probably dead. If your external hard drive is still unreadable, you may have a dead drive. Contact the manufacturer to see if you are still under warranty.

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Conclusion:

So those are some ways to fix an unreadable external hard drive. Since external hard drives are unreadable occasionally, you need to know how to deal with them. Admin hopes that one of the methods above can solve your problem. But if your external hard drive still remains unreadable, it might be time to buy a new one.

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I'm Akshara Singh, from Tamil Nadu (India) I have been Running this Blog since 2016 with my full effort to Help users in the Tech field and clear doubt, and provide advanced guides in simple methods.

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