How to Use DiskPart to Repair Disk Without Losing Data

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Jaden updated on Apr 15, 2025 to Data Recovery Resource | How-to Articles

This article will guide you through using DiskPart to repair disks without losing data, addressing common scenarios like RAW partitions, dynamic disk errors, and more. We'll also cover free data recovery tools and answer frequently asked questions to ensure your data remains safe.

Windows has a robust command-line tool called DiskPart that lets users precisely control drives, partitions, and volumes. Even though it's an outstanding tool for fixing disk-related problems, misuse might result in irrevocable data loss.

This comprehensive guide will walk you through how to use DiskPart to repair disk without losing data, convert invalid dynamic disks back to basic, and recover your files - all with minimal risk of losing data.

How to Fix RAW Partition Using Diskpart Without Data Loss

A RAW partition refers to a drive or volume that lacks a recognizable file system. Typically, this happens when the file system (e.g., NTFS or FAT32) becomes corrupted or damaged. A RAW partition can't be accessed via File Explorer, and Windows may prompt you to format it, which would erase your data.

RAW Partition can happen due to:

  • File system corruption.
  • Sudden power outages or improper ejection.
  • Virus or malware attacks.
  • Physical disk damage.

DiskPart is a low-level tool that directly manipulates disk partitions. Mistakes can result in permanent data loss. Before using DiskPart, it's highly recommended that you back up your data or use a data recovery tool to retrieve your files from the RAW partition. 

We recommend you try EaseUS Data Recovery Wizard. It can perfectly perform deleted file recovery, formatted data recovery, RAW drive recovery, and recover data from inaccessible disks, like in this case.

Here are the steps:

Step 1. Select the drive where you lose your data and click "Search for Lost Data".

select and scan the hard drive

Step 2. Use "Filter" or "Search" to find the lost files when the scan completes.

Step 3. Select all the files you want and click "Recover". Then, browse another secure location to save them.

💡Tip: You can restore data on the local disks, external hard drives, and also the cloud storage.

 

You Can Trust EaseUS Data Recovery Software

EaseUS Data Recovery Wizard has acquired an extensive technical base in data recovery and trusted by billions of users since 2005. Check out reviews on Trustpilot.

Step-by-Step: Fix RAW Drive with DiskPart

Windows cannot access its data when a partition becomes RAW, prompting you to format it. However, formatting erases all data, so follow these steps to repair it safely.

💡Assign a Drive Letter (If Missing)

Sometimes, the RAW drive loses its assigned letter. Use DiskPart to reassign it.

Step 1. Press Win + S > type Command Prompt > right-click and select "Run as Administrator".

Step 2. Type the following commands: 

list volume
select volume X # Replace X with the RAW volume
assign letter=Y # Assign a free letter like Y, Z, etc.

 

Step 3. Check File Explorer to see if the drive is now visible.

If you find this information helpful, please share it with others on social media to assist them in overcoming this common challenge.

 

Convert Invalid Dynamic Disk to Basic Without Losing Data

Dynamic disks may become "invalid" due to corruption, rendering data inaccessible. Converting them back to basic disks typically requires deleting volumes, which erases data. Here's how to do it safely:

Step 1. Built-in tools like Windows File History or third-party software can be used to back up data.

Step 2. The tool, like EaseUS Partition Master, can convert dynamic disks to basic without data loss:

  • Install the software and select the dynamic disk.
  • Choose Convert to Basic Disk from the toolbar.
  • Apply changes and reboot.

How to Use CHKDSK to Repair Hard Disk

By examining a volume's file system and file system information, the check disk software allows users to look for both physical and logical disk flaws. It is also linked to multiple switches capable of performing different functions. Let's see how to fix a corrupt hard disk using CMD:

Step 1. Open Command Prompt as Administrator.

Step 2. Copy and paste the following command and press Enter to execute it:

chkdsk X: /F

Step 3. You can change the application to incorporate each option for a more comprehensive scan.

Conclusion

DiskPart is a potent tool for resolving disk issues, but its commands must be used cautiously to avoid data loss. Always prioritize data recovery before attempting repairs, and consider third-party tools like EaseUS Data Recovery Wizard for complex tasks like dynamic disk conversion. By following this guide, you can confidently repair disks while safeguarding your valuable data.

DiskPart Repair Disk Without Losing Data Windows 10/11 FAQs

Here are additional questions about DiskPart repairing a disk without losing data. Check here for the answers.

1. Can You Convert to Basic Without Losing Data?

Yes, with third-party tools or advanced methods, you can convert a dynamic disk to basic without deleting volumes. However, DiskPart doesn't offer this functionality directly. But let's look at the steps you can take.

2. Is DiskPart safe to use?

Yes, but only if you know the correct commands. Commands like clean or delete volume erase data permanently. Always back up first.

3. What's the difference between a basic and dynamic disk?

Basic disks use primary/logical partitions and are compatible with most OS. Dynamic disks support advanced features like spanning, striping, and mirroring, but are not supported by all systems.