How to Recover Data from A Hard Disk That's Not Detected

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It's a common problem among Windows, macOS and Linus users that a hard disk cannot be detected by the computer. This is a very frustrating situation where you can't access your hard disk. So how can you recover data from the undetected hard disk? Don't worry. In this article, we'll show you several reasons for the issue that the hard disk cannot be detected. Afterward, we'll guide you to recover data from the undetected hard disk step by step.

recover data from a hard disk not detected

Part 1: Why Hard Disk Can't be Detected?

External hard drive might not be detected in Windows for various reasons. Here we collect some most frequent causes:

  • USB port or USB cable is broken.

  • The hard disk has a partition issue.

  • Virus attack and malware infection.

  • The hard disk doesn't have a drive letter or the drive letter conflicts with other disks.

  • The file system of your hard disk is not compatible with the operating system.

If the file system of your hard disk is not supported by the operating system, your hard disk will be considered as a RAW disk or RAW drive. The only fix is to format your hard disk to a compatible file system, but you'll lose all your important data. And if there is a partition issue on your hard disk, the disk will be marked as unallocated.

Part 2: How to Recover Data from Hard Disk That's Not Detected

Once your hard disk doesn't show up in your computer, you should first check the USB port and the USB cable. In some cases, the problem can be fixed after changing a USB port or cable. Then you can recover data from it easily. However, in some cases, the hard disk may only show up in the Disk Management instead of the File Explorer. In these circumstances, you may need a professional recovery program to recover data from the hard disk.

So is there anything can help you recover data from a undetectable hard disk that has become the RAW disk or an unallocated partition? The answer is definitely yes! AnyRecover is a powerful data recovery program that can recover data from a hard disk that is not detected by the computer, including external hard disk and internal hard disk.

Key Features of AnyRecover:

  • Recover data from a hard disk that's not detected due to RAW file system, lost partition, corrupted disk, etc.

  • Recover more than 1000 file types, including documents, photos, videos, emails, etc.

  • An extremely high success rate can be promised thanks to the all-round scan and deep scan.

  • Able to selectively preview and recover the data. What's important, you can recover 3 files with the free trial.

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3 Steps to Recover Data from Undetected Dard Disk:

Step 1: Launch AnyRecover, then select a location you want to recover data from. If the undetected issue is caused by RAW file system, you can find your hard disk under "External Removable Devices"; otherwise, you'll find the lost or unallocated partition under "I can't find my partitions".

select location

Step 2: Click "Start", then the scanning process will begin. Once done, all files will be listed out in respective folders and file types.

scan complete

Step 3: Preview the files that scanned out by the software. Then choose your lost files and click the "Recover".

preview and recover

AnyRecover is a popular program that has been used and trusted by millions of users. The longer you wait, the low the chance of recovery! Don't hesitate to use AnyRecover now.

positive review of hard disk recovery

Bonus Tips on How to Fix Hard Disk That's Not Detected on Windows Computer

If your hard drive cannot be detected and you've tried to connect the external hard drive to another USB port or another computer but the issue persists, then you have to check the following solutions.

Tip 1: Create a New Volume to the Unallocated Partition

Why is your hard disk unallocated? The issue can be caused by improper operations, virus attack, outdated disk driver and etc. This problem can be manually fix.

Check the simple steps here:

Step 1: Open Disk Management.

Step 2: Right click on the unallocated partition. Choose New Simple Volume from the options.

Step 3: The New Simple Volume wizard will pop up. Click Next to continue.

Step 4: Set a volume size and click Next.

Step 5: Assign a drive letter to the partition. Please make sure that the new drive letter doesn't conflict with the current hard disks.

Step 6: Here, you can choose to format this volume or not.

Step 7: Once done, click Finish to close the wizard.

create a new volume

Tip 2: Change or Assign a Drive Letter

There could be a circumstance where your hard disk doesn't have a drive letter or the drive letter conflicts with other local hard disk. If that's the case, the hard disk won't be detected or recognized by the computer. So, it won't dispaly in the File Explorer. Here is how to fix this issue:

Step 1: Right click on the Windows button.

Step 2: Select Disk Management and click to open it.

Step 3: Find your hard disk and right click on it. Select Change Drive Letter and Paths.

Step 4: Click Add if there is no drive letter on your hard disk, or click Change to set another drive letter for your hard disk.

Step 5: Once done, click OK.

change or assign a drive letter

Tip 3: Reformat Hard Disk

The most popular file system on Windows operating system is NTFS. However, the file system of most external hard disk is exFAT or FAT32. In order to use those external hard disks on Windows computers, you need to reformat the hard disk with compatible file system.

Here's how to do it:

Step 1: Open Disk Management.

Step 2: Locate your hard disk and right click on it. Choose Format from the list.

Step 3: Choose NTFS from File System and click OK to perform the process once you finished choosing a file system.

format hard disk

NOTE: All your data will be lost forever. However, AnyRecover can help you recover the deleted data after formatting as long as the data hasn't been overwritten. Since AnyRecover is free to scan data and preview data, you can download the program to check whether it works or not.

Tip 4: Update Disk Drivers

The last resort for you is to update the Disk Drivers. Sometimes, the malfunctioning Disk Drivers may prevent the PC from detecting your hard disk. Follow the steps below to do it.

Step 1: Press Windows+X keys and select the Device Manager.

Step 2: Click Disk Drivers to open the drop-down menu, then right click your hard drive name.

Step 3: Choose Update Driver and then Search automatically for updated driver software.

Step 4: Comfirm and wait for the whole process to complete.

After finishing the update, you can plug your hard disk into the PC again to see whether it can be detected now.

update disk driver

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By Taylor Clark , to External Device Recovery

Updated: Apr 21, 2021

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