How to Solve Disk Partition Not Recognized by Windows 10

Jean updated on Dec 05, 2018 to Partition Master | How-to Articles

Windows 10 Error: Disk Partitions Not Showing up in Disk Management

"I have a 3 TB hard drive and partitioned it into two parts, which were E: and F: on Windows 7 computer. The two partitions are created for keeping personal data, files, and some entertaining programs. Very strangely, after the automatic upgrade from Windows 7 to Windows 10, partition F: just disappeared showing as "unallocated", and the contents inside become inaccessible. How did this error occur? I tried to resume the drive letter in Windows disk management, but it failed as almost all the options are grayed out. I desperately want partition F: back, so is there any other way to fix disk partition not recognized by Windows 10? "

"Disk partition not recognized by Windows 10" is a controversial issue which needs more research to be done. Some doubt that Windows 10 upgrade made it, during which Windows 10 wiped the partition and removed the drive letter; while some suggest using DISKPART command to solve the problem.

But for average users who are with limited technological knowledge, it seems impossible to get the lost partition back if without a powerful and useful Windows 10 partition management tool.

Windows 10 upgrade may delete a partition, which we can hardly resist. So the lost partition on the unallocated space has forever gone? Not exactly. In this case, we introduce people the most viable way to recover lost or deleted the partition with EaseUS free partition manager.

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 Windows 10 is supported

How to Solve Partition Not Recognized by Windows 10 with Easeus Partition Master

EaseUS Partition Master Free is featured with Partition Recovery Wizard, which aims to help recover deleted or lost partitions due to hardware or software failure or Windows errors. The Windows 10 error which results in disk partition not recognized or showing up as "unallocated" can be fixed entirely by the magic utility, and the whole partition with the drive letter is very likely to appear again.

Now follow the video guide below to learn how to fix the disk partition not recognized by Windows 10 and get the lost partition back to normal with automatic recovery mode.


Step 1: Launch EaseUS Partition Master on PC

Click on "Partition Recovery" at the top of the main window.

Run EaseUS Partition Master for partition recovery

Step 2: Select a hard disk to search for the lost partition(s)

Choose the hard drive disk or SSD where you lost partitions, and click "Scan".

Run EaseUS Partition Master for partition recovery

Step 3: Wait for the scanning process to complete.

This program will scan the whole disk with two modes - "Quick Scan" and "Deep Scan" to find all lost partitions and data for you.

  • Quick Scan will find your latest or recently deleted partition at a fast speed.
  • Deep Scan will scan and find more and earlier deleted partitions. 
  • If the Quick Scan doesn't find your lost partition, wait patiently till the Deep Scan completes.
Scan lost partitions

During or after the scan, you can double-click the partition marked as "Deleted" to check and view the partition content. If it contains your lost partition data, go to Step 4 and continue. 

Check lost partition contents

Step 4: Select and recover lost partitions

1. Select the lost partition, marked as "Deleted" with previous Labels, capacity etc, and click "Proceed" to continue.
2. Click "Recover Now" to confirm and restore the lost partition.

Scan lost partitions

3. Click the "Execute Operation" button and click "Apply" to restore lost partition.

Scan lost partitions

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Frequently Asked Questions

Why Choose EaseUS Partition Master?

"I've used Partition Master Professional many times to create, delete, format, move, rename, and resize partitions."PCWorld

"Partitioning tools have come a very long since the days of complicated command line utilities and EASEUS Partition Master is one of the most advanced programs available."TECH ADVISOR

"I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes."Lifewire

Will the "Migrate OS" feature transfer the Windows system files only or the whole C drive?

To ensure that the migrated system will boot normally, the Migrate OS feature will transfer all the files in the system and the boot partitions. Generally, the boot partition is the C drive so the transfer will include all the files in C.

Does EaseUS Partition Master license apply to multiple computers?

The license of Partition Master Professional and Server editions can be used on 1 computer only, while that for for the Technician and Unlimited editions can be used on multiple machines.

What is the difference between EaseUS Partition Master Trial version and the Free version?

Free is for home users only, with most basic functions available such as partition resize and clone. While trial can help you understand how this product works and test what a full license can do on a business or server OS machine.

Will it cause any data loss after resizing the partition in EaseUS Partition Master?

Generally, it will not cause any data loss or boot issue by resizing a partition. However, in order to protect your data, we suggest that you backup the partition before resizing, in case of any unexpected situations such as power outages, computer hardware failures, etc. You can use EaseUS Todo Backup to backup the partition and its trial version is fully functioned for 30 days.

What should I prepare before resizing the partition?

On the partition that is going to be operated, there might be some files being occupied by other programs. To ensure a successful operation, we suggest that you close all the unnecessary software before resizing that partition. Otherwise, EaseUS Partition Master will detect the partition being locked by the other software and require a reboot to resize the partition under boot mode.

About EaseUS Partition Master

All-round disk & partition management software for personal and commercial use. Let it manage your storage drive: resize, format, delete, clone, convert, etc.

Video Tutorial

How to Partititon a Hard Drive on Windows 10/8/7