How to Get Back Lost Partitions in Windows 10,8,7?

If you lost partition or delete an important partition by mistake, you can use the AOMEI Partition Assistant software to easily get back lost partition in Windows 10,8, 7.


By Emily / Updated on May 12, 2023

Share this: instagram reddit

Why does partition get lost in Windows 10/8/7?

Typically, we need to partition a storage device into one or multiple partitions before it can be used to store data. Partition is a piece of area for keeping the operating system and personal data. If one partition gets lost, deleted or corrupted, you will be unable to access all files in that partition. No users want to suffer such an issue. However, partition might get lost due to many factors including:

▸Improper operation during OS installation: when you asked whether to keep the previous partition on hard drive during system installation, you choose NO and partition gets deleted.
▸Abrupt power outage: the power failure can cause various issues to partitions, and one might be partition loss.
▸Virus infection: if the partition is infected by the virus, it can also get lost.
Bad sector: a hard drive that contains bad sectors might become empty.
▸Drive letter loss: if one partition does not have a drive letter, this partition will not show up in Windows File Explorer.
▸Clean command: when you execute a “clean” command on the hard drive in Diskpart, the partition will be deleted and the files will be erased as well.

Get back lost partition via assigning a drive letter

Many users might wonder if it is possible to get back lost partition. Actually, that mostly depends on the real culprit behind the partition loss issue. If you cannot see your partition in Windows File Explorer because it does have a drive letter, you can get the lost partition by assigning it a drive letter via DiskPart or Disk Management.

Add Drive Letter

However, if your partition is deleted by accident and get lost, you have to turn to a professional partition recovery tool.

Software for getting back lost partition on Windows 10, 8, 7

As a professional partition recovery program, the AOMEI Partition Assistant Professional is highly recommended. It can recover deleted partition on internal hard drive or external hard drive like USB flash drive, SD card, SSD, etc. Moreover, it can restore the data stored on the partition as long as you don't overwrite those content after partition loss. Besides, two ways are available to search the lost partition.

Fast Search: this method will quickly find out deleted or lost partitions. If you cannot find the lost partition via this method, you can use “Full Search”
Full Search: this method will deep scan all sectors on a hard disk to furthest find out all of lost partitions.

You can download its demo version and follow the guide to learn how to retrieve lost partition.

Free Download Win 10/8.1/8/7/XP
Secure Download

Step 1. Open Disk Management and remember the size of the lost partition so that you can easily identify it during the lost partition recovery process.

Step 2. Install and run AOMEI Partition Assistant Pro. Click “Recover” on in the top toolbar, and choose “Partition Recovery”.

Partition Recovery Wizard

Step 3. In the subsequent window, choose the disk which contains the lost partition and click “Next”.

Select Disk

Step 4. In this window, choose a search method based on your requirements and click “Next” to continue.


Step 5. Find out and tick the lost partition from the given list and click “Proceed”.


Step 6. When you see the word “Congratulations”, the deleted/lost partition has been recovered successfully. Then you can click “Finish” to exit.


Then you can go back to Windows File Explorer and the lost partition should show up there now.

If the boot partition is deleted by mistaken and Windows cannot boot, you can first make a bootable media via AOMEI Partition Assistant Professional, and then recover the boot partition in Windows PE mode.
If you need to recover lost partition on Windows Server, the AOMEI Partition Assistant Server can meet your demands.

Bottom Line

Now, you must know how to get back lost partition on Windows 10/8/7. Apart from retrieving deleted partition on both external and internal hard drive, AOMEI Partition Assistant Professional comes with many other fantastic funtions like allocate free space from one partition to another, convert MBR and GPT without deleting partitions, convert dynamic disk to basic one without losing data, clone OS to new hard drive, and more.

Emily · Staff Editor
Emily is an English editor of AOMEI Technology; she has a great passion for providing easy solutions for people to tackle with all disk or partition management problems. In addition to writing articles about disk/partition management, she also edits great tutorials on how to back up and restore disk for data security. In her spare time, she loves to learn computer skill to improve herself or stay with her family to enjoy a good day.