Best Partition Lost Recovery Tool to Recover Lost/Deleted Partitions in Windows 10/8/7

February 15, 2019

Find your important partition missing in Windows 10/8/7? You can try AOMEI Partition Assistant, a powerful partition lost recovery software for Windows users to quickly recover lost/deleted partitions.

User stories

“There was a hard drive on my Windows 10 computer, that should have been left alone, but during the Windows reinstall process the partition was accidentally deleted. I want my partition back. Please help me out.”

“My F drive, which is a partition on my main hard drive used for movies, has disappeared. I am using Windows 10 and the partition was almost full with some downloads in progress. So is there any partition lost recovery tool that can recover my F partition?”

Major causes

When you find your partition missing or lost, you might wonder what happened. Below are some major factors that could cause lost partitions.

Accidental deletion: one of the most common reason is that you delete the partition by mistake, like accidently typing a wrong partition number in Diskpart when you attempt to delete volumes.

Sudden power failure: An abrupt power surge or powerful outage during partition operations can also make a partition inaccessible and missing.

Loss of volume drive letter: when the partition does not have a drive letter or loses one, you will not be able to see this partition in File Explorer.

> Partition table corruption: Sometimes virus or malware can damage the partition table, which can lead to a lost partition as well.

Bad sectors: if the partition has some bad sectors, sometimes the operating system cannot recognize it, either.

How to recover lost partitions in Windows 10/8/7?

Although lost partitions makes you not able to access data within it successfully, the good news is that you may recover them in Windows 10/8/7 via the following two methods.

Method 1. Recover deleted partition using CMD

This method can help you get lost partitions by reassigning a new drive letter, so it is perfect if the loss of volume drive letter makes a partition invisible. Here is how it works.

Step 1. Open Disk Management to know which volume is lost and remember its partition size, generally speaking, the lost partition is shown as Unallocated.

Step 2. Open Diskpart service: type cmd in the search box, right click the Command Prompt icon and select run as administrator, then in the pop-out window, type diskpart and press Enter.

Step 3. Type the following commands in sequence and hit Enter after each one.

list disk: every disk connected to your computer will be shown.

select disk #: # stands for number of the disk where the deleted partition locates. Here we select disk 1.

list volume: all partitions on the selected disk will be listed.

select volume #: # stands for the number of the deleted partition. Here we select volume 7.

assign letter=h or other available drive letters.

Recover Lost Partition CMD

Method 2. Recover lost partitions via AOMEI Partition Assistant Professional

If you are not quite familiar with running such commands in the first method, you can try AOMEI Partition Assistant Professional, a partition lost recovery tool. Its partition recovery wizard can help you retrieve the deleted or lost partition easily. More importantly, if it is your system partition that gets lost and leads to Windows failing to boot, this versatile software can create a bootable USB to recover deleted boot partition in Windows PE environment. Below is how to recover lost partitions via AOMEI Partition Assistant Professional.

Step 1. Install the partition recovery tool and launch it in your Windows PC.

Step 2. Click Partition Recovery Wizard under Wizard column. Select the disk that contains the deleted partition and click Next.

Partition Recovery Wizard

Step 3. Select a search method according to your special requirements and click Next.

Search Method

>  Fast Search: this method will quickly find out deleted/lost partitions. Time-saving and recommended.

>  Full Search: this method will scan each sector of the chosen disk, so it is time-consuming. When the first search method fails, you can choose this one.

Step 4. Select the deleted partition you want to recover from the given list and click Proceed.

Select Lost Partition

Step 5. When the see the word “Congratulations”, the partitions have been recovered successfully. Click Finish to exit the window.


After this, you can go to File Explorer to check whether the partition and data in it can be accessible.

In order to avoid such issus in future, you can also use this partition lost recovery tool to copy partitions to another disk for a data backup. Besides, AOMEI Partition Assistant provides many other amazing disk partition management functions, including extending system drive to solve C drive full problem, migrating operating system between MBR and GPT disks and more.