By Stephanie / Last update March 14, 2022

About NTFS partition loss

NTFS (New Technology File System) becomes the mainstream for Microsoft's Windows operating systems to store users' data because of its overall benefits. This standard file system for Windows NT, Windows 2000, XP, Windows Server, 2008, Windows Vista Windows 10, and Windows 7.  

NTFS is primarily optimized for Windows to increase speed, performance, disk space use, reliability, etc., compared to alternative file systems such as FAT or HPFS.

Unfortunately, even contemporary file systems like NTFS have their disadvantages. NTFS file systems may still be damaged. You may delete the NTFS partition by accident or the partition gets lost for kinds of reasons.  


Common causes of NTFS partition loss

With the wide use of NTFS partitions by more computer users, the possibility of NTFS partition loss would increase accordingly. Normally, NTFS partition loss is caused by the following main four reasons:

▸ Partition table corruption or damage.
▸ Users’ errors-partition gets deleted or lost by mistake or improper operation.
▸ Bad sectors/tracks in the partition.
▸ Operating system or file system corrupted.
▸ Unexpected power surges.
▸ Interruption of resizing partition.

All of the above reasons could lead to computer hard disk partition loss. However, after users found the partition is missing, there is still possible to recover the NTFS partition.


Is it possible to recover the NTFS partition in Windows 10/8/7?

The answer is yes. After the NTFS partition is deleted or lost, it will be marked as Unallocated space in Disk Management and become inaccessible. Unless you reformat the partition, then you can reuse it, which means all data on the partition will be erased clean.

In this case, you’d better use a reliable partition recovery tool-AOMEI Partition Recovery Wizard to restore the deleted NTFS partition. You can recover the partition and data together if you follow:

Do not reformat the partition or hard disk
Do not make any new operation on the disk
Do not add any new item on the partition
Do not rebuild the partition table


How to recover deleted or lost NTFS partition in Windows 10/8/7

When your NTFS partition suddenly becomes unallocated space, you need to perform NTFS partition recovery right away. To recover deleted or lost NTFS partition in Windows 10/8/7, AOMEI Partition Recovery Wizard would be your best helper. Or you can try Command Prompt to assign a drive letter to the lost NTFS partition.

Method 1. Recover deleted or lost partition with NTFS partition recovery tool

AOMEI Partition Recovery Wizard, a built-in utility in AOMEI Partition Assistant Professional, is created to restore lost or deleted partitions including FAT, NTFS, Ext2, Ext3, Ext4 in Windows. With the easy-to-use interface, two scan modes, and high success rate, AOMEI Partition Recovery Wizard won a lot of reputation from users.    

AOMEI Partition Assistant Professional
As an outstanding disk manager, there are many utilities collected in one software to manage the internal hard disk and external hard disk with no effort.
✦ Partition Manager: create partitions, delete partitions, format partitions, change drive letter, shrink partition, extend partition.
✦ Converter & Wizards: convert MBR and GPT without deleting partitions, move partition, clone partition, merge partition, format large hard drive (over 32GB) to FAT32, allocate free space from one partition to another.

To recover deleted or lost NTFS partition in Windows 10/8/7, you can follow the detailed steps below. You can download the demo version first.

Try Demo Version Win 10/8.1/8/7/XP
Secure Download

Step 1: Install and open AOMEI Partitional Assistant Professional. Select Partition Recovery Wizard on the left panel.


Step 2: Click the disk you want to recover. Then click on “Next”.

Step 3: Select a search mode. It is recommended that you select Fast Search the first time. If it doesn’t work then you can try the Full Search option.


Step 4: Select the lost NTFS partition and click on “Proceed”.


Step 5: Click on “Finish” to exit the window when you see the congratulations message.


After performing NTFS partition recovery, you can go to Windows File Explorer to check whether the lost or deleted NTFS partition is restored. If you did not make any new operations on the NTFS partition since it is deleted and lost, the data will also be recovered and accessible.

Method 2. Assign a drive letter to the NTFS partition via Command Prompt

The lack of a drive letter will make the partition not recognizable by the NTFS file system or operating system. If your partition is marked with an asterisk in Disk Management, use Command Prompt, a Windows built-in tool, to assign a drive letter to the lost partition. This method requires users have a certain understanding of the Command line.

Step 1: Press “Win + R” on your keyboard and type “diskmgmt.msc” in the Run window to open Disk Management. (If a partition is deleted or lost, the volume will be marked as Unallocated or with an asterisk. Remember the partition size.)

Step 2: Press “Win + R” and type “CMD” to Run CMD as administrator.

Step 3: Type the following prompt and press Enter after every command line.


list disk

select disk # (Replace # with the number of the hard disk that contains the lost partition).

list volume

select volume # (replace # with the number of the lost partition).

assign letter=# (Replace # with an available drive letter, from C to Z).



So, the bottom line here is, use AOMEI Partition Assistant Professional to perform NTFS partition recovery. Hopefully, this post has explained the methods you need. If the NTFS partitions are lost or deleted, AOMEI Partition Wizard helps you to recover them.  Now it is your turn to have a try on this partition recovery software.

In addition, the best way to avoid partition loss is to regularly create a full image backup of system and important files with a reliable backup tool-AOMEI Backupper, or in an external hard drive.