How to Recover Deleted Partition(s) on Windows 10

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How to Recover Deleted Partition on Windows 10

When most Windows users discover that an important partition has been deleted, they immediately assume that all files that were stored on it are gone for good. In many cases, however, that’s not true at all, and this article explains how you can recover deleted partition on Windows 10 and get your missing files back. 

What Are Partitions? 

windows partitions

While you don’t need to understand how partitions work to recover one, having at least a very basic understanding of their role in allowing you to store data on a storage device can help you choose the best possible recovery approach and avoid making a potentially disastrous mistake. 

Here’s a textbook definition of partition: A section of the storage device that is separated from other segments.

You can think of a partition as a container for data stored on a storage device, such as an internal hard drive or USB flash drive. Without at least one partition, Windows wouldn’t know where to save files, which would make the storage device next to useless. 

Information about partitions is stored in the partition table, which is located in a special region on the storage device, known as the Master Boot Record (MBR) or the GUID Partition Table (GPT) or something similar. 

Among the information stored in the partition table is the file system of each partition on the storage device. This information is extremely important because different operating systems can access only partitions with certain file systems:

Windows

macOS

Linux

FAT/32, NTFS, exFAT, Live File System, and ReFS

HFS+, FAT/32, exFAT, and NTFS (read-only)

FAT/32, Ext2/3/4, Btrfs, Reiser4, XFS, and others.

When a partition doesn’t have any file system, it appears as RAW and—just like an unpartitioned storage device—can’t be used to save files.  

How Do Partitions Get Deleted or Become Inaccessible? 

A single online search can reveal thousands of users asking for help because they lost a partition. Just take a look at these examples: 

  • I deleted my HD partition when I was installing Windows OS. How can I recover the deleted partition Windows 7? (Quora)
  • Accidentally deleted a partition on a drive while on the partitioning screen (was installing Windows 10 on a separate drive when it happened). What is the best way to recover that data? It was a 500 GB partition on a 2 TB drive. (Reddit)
  • Is there any free tool to recover a partition which suddenly gone without any accident or misuse? (CNET)

Problems with deleted or inaccessible partitions are not limited to just internal hard drives because all storage devices (HDDs, SSDs, USB flash drives, memory cards, and so on) must contain at least one partition to be useful, which is one reason why there are so many possible causes of partition loss, including: 

  • User error: From mistaken partition deletion to improper resizing, there are many examples of improper actions taken by users resulting in the loss of a partition. 
  • Hardware issues: A partition may disappear when the sectors that are used to store information about it stop working correctly. 
  • Corruption: Sometimes, partitions become inaccessible due to file system corruption, which may be caused by an improper shutdown, write errors, or software bugs. 
  • Malware: There are many strains of malware capable of destroying entire partitions in the blink of an eye. 
  • Incompatible file system: As we’ve explained, operating systems can read only certain file systems, and a partition with an incompatible file system may appear as empty even though it isn’t. 

Is My Partition Recoverable? 

To determine if you can recover a lost partition on Windows 10, you must first find out what really happened to it, and the Disk Management utility can help you do just that. 

The purpose of this useful utility is to enable advanced storage tasks that are not possible to perform from File Explorer, which only lists partitions that are in good working order. To launch the Disk Management utility, simply open the Start menu, type “disk management”, and hit Enter. 

disk management utility

You should see all the storage devices connected to your computer and their partitions. The Disk Management utility displays any physical space on a storage device that doesn’t belong to a partition as “Unallocated”. Partitions with no file system are displayed as “RAW”. You may also come across a seemingly healthy partition with no drive letter assigned to it. 

In all of these cases, partition recovery is usually possible. 

On the other hand, partition recovery is usually not possible in cases when the lost partition has been clearly overwritten by a different partition and used to store new data. In such cases, your only option is to scan the entire storage devices using a data recovery software application (more about data recovery software later in this article). 

Before You Start Recovering Your Partition 

Before you start recovering your partition, there are some things you need to avoid doing to ensure great results: 

  • Do not perform any unnecessary read/write operations on the hard drive.
  • Do not reformat the hard drive.
  • Do not copy new files to the partition.
  • Do not rebuild the partition table.
  • Do not use random partition repair solutions downloaded from the internet. 

With that said, you now know everything you to recover a deleted partition on Windows 10! 

Question: Can I use the methods described below on older versions of Windows?

Answer: Absolutely! Just because we’re using Windows 10 in our examples doesn’t mean that you can’t follow our instructions if you’re using Windows 8, 7, or even XP. Just keep in mind that certain options might be located elsewhere or called differently. 

How to Recover Deleted Partition on Windows 10

Let’s take a closer look at three ways to recover a deleted partition on Windows 10, starting with the most intimidating method. 

Method 1: Recover Deleted Partition Using CMD

cmd iconThe command-line in Windows is a powerful tool that administrators (and regular users with administrative privileges) can use to efficiently issue advanced commands. 

Here’s how you can use it to recover a deleted partition in Windows 10

  1. Open CMD as administrator (you can find it in the Windows System folder in the Start menu or by searching “cmd”). start menu cmd
  2. Type diskpart and press Enter on your keyboard to launch the Diskpart utility. 
  3. Type list disk and press Enter to list all storage devices connected to your computer.
  4. Type select disk x (replace x with the number of the storage device with the missing partition). diskpart list disk
  5. Type list volume and press Enter to list all volumes on the selected storage device.
  6. Type select volume x (replace x with the number of the missing partition). 
  7. Type assign letter=Z to assign the specified drive letter to the missing partition (you can choose any drive letter that’s not already assigned to a device or drive).diskpart list volume

You should now see the missing partition listed alongside your other drives. 

Method 2: Recover Deleted Partition Using the Disk Management Utility 

disk management iconIf you don’t like the idea of performing partition recovery using the command-line, this next method is for you because it lets you recover a lost partition in Windows 10 from the Disk Management utility.

Follow these steps to recover a lost partition using the Disk Management utility

  1. Open the Disk Management utility by selecting the Create and format hard disk partitions option under Administrative Tools in the System and Security section of the classic Control Panel. system and security options
  2. Locate the storage device with the missing partition. 
  3. Right-click on the missing partition and choose Change Drive Letter and Paths.
  4. Click Add and assign any available drive letter. 
  5. Click OK to confirm. disk management assign letter

You can also use the Disk Management utility to create a new partition on unallocated space, mark partition as active, and more. 

Method 3: Restore Lost Partition Using Partition Recovery Software

The first two methods are great for quickly making inaccessible partitions accessible again, but they won’t help you fix more complicated cases of partition loss on Windows 10, which is where partition recovery software applications come in. 

Let’s look at two such applications, one capable of recovering lost partitions and/or making non-booting disks bootable again, and the other one being useful in situations where partition recovery is no longer possible and you just want to recover as many deleted files that were stored on the partition as possible. 

Option 1: TestDisk

testdisk iconTestDisk is a useful open-source partition recovery software application that can fix broken partition tables, rebuild damaged build sectors, and do a lot more to recover lost partitions and/or make non-booting disks bootable again. In our opinion, it’s the best free partition recovery solution for Windows 10, and its only downside is the lack of a graphical user interface. 

Fortunately, TestDisk has a detailed step-by-step guide published on its website, which shows how to use the free partition recovery software to recover a missing partition and repair a corrupted one on Windows 10 and older. 

The guide is available in English, Chinese, German, Spanish, French, Persian, Italian, Polish, Romanian, and Russian. 

Option 2: Disk Drill 

diskdrill icon

No luck with any of the partition recovery solutions we’ve described so far? Then it might be the right time to stop focusing on partition recovery and start focusing on recovering as many lost files as possible.  

Disk Drill is a data recovery software solution capable of scanning individual partitions (even RAW partitions) as well as entire storage devices and recovering deleted files (pictures, video, audio, documents, archives, and more) from them. 

This is how easy it is to recover deleted files from a lost partition with Disk Drill

  1. Download and install Disk Drill on your computer.
  2. Launch Disk Drill and scan the storage device on which the deleted partition was located. diskdrill select drive
  3. Select which files you want to recover. 
  4. Click the Recover button. 
    disk drill select items
  5. Specify the recovery directory and confirm.  disk drill recovery folder

Tips to Avoid Partition Loss in the Future 

tips and tricks banner

In this article, we’ve described multiple ways to recover a partition on Windows 10. Even though partition recovery is possible and not that difficult, you should always do everything you can to avoid partition loss because successful recovery is never 100% guaranteed. 

To avoid future partition loss: 

  • Be careful during partition management: A lot can go wrong during partition management, so you need to be extra careful and always double- or triple-check every action you make to avoid accidentally deleting an important partition or making it inaccessible. 
  • Avoid partition management tools with poor reviews: There are many partition management tools that you can download for free online, and you should always do your research to avoid those with poor reviews because they might cause more harm than good.  
  • Install a reliable anti-virus software solution: Some strains of malware are designed to cause as much damage as possible and even destroy entire partitions. A reliable anti-virus software solution can help you defend yourself against them. 
  • Create byte-to-byte backups of your storage devices: Byte-to-byte backups can be used to recover an entire storage device, including all of its partitions, making them indispensable when everything else fails. 
David Morelo is a professional content writer in the technology niche, covering everything from consumer products to emerging technologies and their cross-industry application.
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This article has been approved by Brett Johnson, Data Recovery Engineer at ACE Data Recovery. Brett has a Bachelor's Degree in Computer Systems and Network, 12 years of experience.