[Solved] One of My Hard Disk Partition is Missing in Windows!

One of my hard disk partition is missing! Don’t worry! This article aims to recover missing partitions with feasible methods.


By Penny / Updated on December 20, 2023

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How do I find a missing partition in Windows 10?


Two days ago, I installed Windows 10 in place of Windows 7. After that, I restarted my laptop, but I found one partition of my hard disk was missing. I’ve saved all my photos and videos on it. How do I restore the missing partition on the hard drive? Please help me!   

The disk partition disappeared! You may be wondering if it is possible to recover a missing partition right now. Yes, it is recoverable with reliable solutions. You’re supposed to confirm possible reasons first, then select a corresponding method.

Possible reasons for partition missing

The loss of drive letter, accidental deletion, partition table damage, improper partition resize, bad tracks or sectors, unexpected power failure, and virus attacks could cause disk partition disappeared.

If you realize that your disk partition disappeared, you could take the following precautions to avoid data loss again before performing the partition recovery. To some degree, these little tricks are essential to data/partition recovery.

❌ Warning:

Shut down your PC and don’t write new data on it. Because any written performances could overwrite the deleted/lost data.

Do not create a new partition in the unallocated space.

Do not rebuild the partition table.

Do not format the hard disk.

Do not try until you get a correct and reliable solution.

How to recover missing partition in Windows?

Failing to view the disk partition with Windows File Explorer, some users would mistakenly deem “one of my hard disk partition is missing.” Nevertheless, it might be not the case. Thus, you’d better open the Disk Management utility and reconfirm your disk partition is missing or not.

Way 1. Assign a drive letter to recover missing partition

For computers, mistakenly deleted partitions or files could generate unallocated space, which can be accessed using Disk Management. If the unlettered hard disk partition is invisible to you, you can assign a drive letter to the disk partition and make it visible in Windows File Explorer.

To some extent, these hard disk partitions are hidden partitions in Windows instead of the missing ones. Apart from this situation, you can skip the first method and move to the following solution.

Step 1. Press “Windows + R”, and enter “diskmgmt.msc” in the window. Then click the “OK” button or press the “Enter” key to open the Disk Management utility.

Step 2. Fins the missing hard disk partition and right-click on it, and select “Change Drive Letter and Paths”.


Step 3. Select the “Add” option to add a drive letter for the missing hard disk partition.

Step 4. Click “Assign the following drive letter” to rename the drive letter for the missing hard disk partition.


After that, you can confirm the missing hard disk partition with Windows File Explorer.

Way 2. Recover missing partition without losing data

If the missing disk partition is due to accidental deletion or other unknown reasons, AOMEI Partition Recovery Wizard is a better option for you. If you have followed the suggestions above, you can recover missing partition efficiently with this professional partition recovery software.

Built-in AOMEI Partition Assistant Professional, this highly acclaimed tool makes it possible to recover the deleted/lost partition in four steps. Before data coverage, you can also retrieve the data saved in the missing hard disk partition. And it supports NTFS partition recovery, FAT partition recovery, and Ext2/Ext3/Ext4 partition recovery.

 As a disk manager, it can help you resize, move, merge, split partitions without losing data. As you can see, it can save you from improper partition resize.
As a multifunction converter, it allows you to execute disk conversions between MBR and GPT/basic disk and dynamic disk/NTFS and FAT32.

Please download and try out with its demo version. These steps describe how to recover missing partition with four steps.

Download Demo Win 11/10/8.1/8/7/XP
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Step 1. Install and launch its demo version on the PC. Select the “Recovery Partition Wizard” on the left panel, and locate the partition that includes your missing hard disk partition. Then click the “Next” button.


Step 2. Select “Fast Search” or “Full Search”. If you want to find your missing hard disk partitions quickly, “Fast Search” is right for you.


Step 3. You’ll see all the deleted/lost hard disk partitions on your hard disk, locate the missing partition and click the “Proceed” button.


Step 4. After the recovery process, you’ll see the “Congratulations” message. Then you can click the “Finish” button to exit this window. You can also open Windows File Explorer or Disk Management to check it.

Relevant Questions & Answers for partition recovery

✿ Can you restore the recovery partition?

After deleting the recovery partition, how do I restore a recovery partition in Windows 10? You can use a recovery drive to restore or recover your PC if there are accessible backups for you. However, this solution will wipe out all the newly added data after restoring the computer to the factory settings.

As a troubleshooting tool, AOMEI Partition Assistant Professional is also applicable to recover the deleted recovery partition. So why not give this partition recovery software a shot?

✿ Help! I can’t boot my computer after mistakenly deleting a partition!

It’s impossible to boot your computer after deleting the boot partition. Therefore, you need to make bootable media first, and you can recover the missing boot partition or disk partition. Because of advancements in technology, AOMEI Partition Assistant is applicable for these two phases.

Given that making bootable media needs to erase all the existing data on the USB flash drive, so you’d better use a free USB.

✿ Is there any free way to make backups?

The built-in features of Windows are extensive and comprehensive. For example, you can use File History, Backup and Restore, System image/System restore for file backup, disk backup, and system backup. Please note that Backup and Restore only can create backups of the C drive.

Given that there’re many restrictions on using the Windows feature, thus AOMEI Backupper could be your best choice. This free backup software supports you to backup, sync, and clone. In this case, you can make good use of “Disk Partition”, or “Partition Backup” to make selective backups using AOMEI Backupper. If you need it, “System Backup” is also supported.

Penny · Editor
Penny works as an editor at AOMEI Technology, while she's a tester and editor for AOMEI Data Recovery Tools. She enjoys helping users with data recovery issues on Windows and iPhones using simple and practical solutions. Outside of work, she has a strong affection for pets, particularly giant pandas.