How to Repair the Corrupted External Hard Drive without Losing Any Data

Tracy King updated on Aug 11, 2019 to Storage Media Recovery | How-to Articles

Summary

This tutorial article shows you how repair corrupted external hard drive without losing any data with professional hard drive recovery software and solutions. If your external hard dive, hard dive partition, USB, SD card etc devices suddenly corrupted or crashed, just follow to repair corrupted hard drive etc devices and restore valuable data now.

Have you ever wondered what reasons that may cause your storage devices such as external hard drive, USB or SD card, etc. corrupt? This article explains reasons and even provides solutions here to help you repair corrupted files on hard drive and even fix corrupted external hard drive without losing any data. Follow to see how to repair your corrupted/failed storage devices without losing any data now:

PAGE CONTENT:
1. What may cause external hard drive corrupt
2. How to repair corrupted files from external hard drive
3. How to recover data or files from corrupted external hard drive
4. How to repair corrupted external hard drive
5. How to repair corrupted external hard drive without formatting

What May Cause External Hard Drive Corrupt

There are quite a lot of reasons that may cause your storage device corrupted. Here below is a list of the causes:

  • Improper operation: un-plug device from PC without ejecting;
  • Virus attack;
  • Bad sectors exist on the storage device;
  • File system error;
  • Other unknown reasons.

To avoid unexpected storage device corrupt error, it is highly recommended users to update their USB drive, SD card, memory card, hard drive partition, and external hard drive, etc. drivers timely, use devices properly, clean virus with anti-virus software regularly. But if the error has already occurred, how to fix it? Here below, we'll show you how to repair corrupted external hard drive without losing data so that you can learn how to get lost data back and repair corrupted storage device then.

Part 1. How to Repair Corrupted Files from the External Hard Drive

If your external hard drive can be detected by the computer, but the saved files are corrupted, you can try below steps to repair corrupted files from it now:

  • Open Start and type: cmd, hit Enter to open Command Prompt Window;
  • Type: chkdsk g:/f (if the external hard drive is Driver g:), click Enter;

If you cannot access the data saved on the corrupted device, don't worry. Continue reading and find solutions in the below passages.

Part 2. How to Recover Data or Files from the Corrupted External Hard Drive

When your storage device suddenly corrupted, the most urgent thing is about how to recover data or files from it. Here below you'll find two methods to get this issue fixed now:

Method 1. Recover Data with other USB Cable or New PC

If you are not sure whether the device has been corrupted, you can connect it with a new USB port or even a new PC to see whether it can be detected or not. If the drive can be read, then you can directly use your data on the external hard drive. If the hard drive cannot be detected, you shall find a powerful data recovery software to recover data from the corrupted external hard drive (which is introduced in Method 2).

Method 2. Recover Data with Hard Drive Recovery Software

Powerful hard drive recovery software can help you get data out of corrupted storage device with simple clicks. Here we'd like to recommend you try EaseUS Data Recovery Wizard which allows you to restore lost data on all storage devices under Windows 10/8/7. Just download, install and activate it to follow below steps recover precious data from your corrupted external hard drive now:

Step 1. Choose the external hard drive

Since you're going to recover data from the external hard drive, run EaseUS Data Recovery Wizard and under the External Devices tab, choose the exact drive where you lost data. Click Scan.

select external hard drive

Step 2. Scan for lost data

The software will start immediately to scan all over the selected drive for all lost data. During the scan, you could see more and more data showing up in the results.

scan external hard drive

Step 3. Preview and recover data

After the scan is over, check the scan results for the desired data. You can preview the file by double-clicking on it. Click Recover and choose another location to save the recovered data.

preview and recover data

After restoring data from the corrupted external hard drive, you may also want to know how to repair the corrupted device. Follow to find the answer now.

Part 3. How to Repair Corrupted External Hard Drive

Here in this part, we'll show you two methods to repair corrupted external hard drive:

Method 1. Quick Fix Corrupted External Hard Drive by Formatting

  1. Step 1. Connect corrupted external hard drive with PC;
  2. Step 2. Right-click the device and select Format;
  3. Step 3. Set new file system - NTFS or FAT etc. to the drive and click OK to finish the process.

Method 2. Repair Corrupted External Hard Drive with Partition Manager Software

If your external hard drive corrupted and become RAW, you may try free partition manager software - EaseUS Partition Master with its Check partition feature to repair all existing errors on the drive:

Step 1. Connect unallocated external hard drive with PC, run EaseUS Partition Master Free;
Step 2. Right-click the unallocated device and select Check partition, and tick check Check Partition Properties, Call Windows Chkdsk.exe to fix errors if found errors, Surface Test;

Fix and repair corrupted external hard drive by partition manager software.
Step 3. Click OK. You can also apply EaseUS Partition Master to format the corrupted external hard drive into reusable again.

Part 4. How to Repair Corrupted External Hard Drive Without Formatting

So how to repair corrupted external hard drive without formatting? If you don't want to format it, or if the drive becomes unallocated, it won't work with formatting method.

Method 1. Repair Corrupted External Hard Drive by Partition Manager Software, no Formatting

Follow below step by step guide with professional partition manager software - EaseUS Partition Master Free to find out how to repair corrupted external hard drive without formatting now:

Step 1. Check and repair the corrupted external hard drive

You can directly follow Method 1 in Part 3 with EaseUS Partition Master Free to check and repair errors in the corrupted device.

Step 2. Wipe data on the corrupted external hard drive and make it unallocated

Launch EaseUS Partition Master Free and right-click the corrupted device by selecting Wipe data; then it will become unallocated.

Repair corrupted external hard drive without formatting.

Step 3. Create a new partition to repair the corrupted external hard drive
Then you can use Disk Management or EaseUS Partition Master Free to create a new partition, reset size, drive letter and file system to make to the corrupted device usable again.

Method 2. Run CMD to Repair Corrupted External Hard Drive Without Formatting

This method will erase all data on your corrupted device. Therefore, please recover data from the corrupted external hard drive first before you run CMD to repair the drive.

  • Press Win+R, type: cmd and click Enter;
  • Type: diskpart and hit Enter;
  • Type: list disk and hit Enter;
  • Type: select disk 0 and hit Enter; (0 stands for the drive letter of your corrupted external hard drive.)
  • Type: clean and hit Enter; (This will wipe all data on the drive.)
  • Type: create partition primary and hit Enter;
  • Type: exit and hit Enter to finish the process.
 
 

100% of people found this article helpful.

 

Frequently Asked Questions

1. Why cannot I recover 2GB data for free?

It is recommended to check the version installed is Free or Trial because they are different versions.

Trial has data preview function but cannot save any files, while the Free version enables to recover 2 GB files. The default free space is 500 MB and you may share the product on social media to get another 1.5 GB.

2. Why cannot the recovered files be opened?

A file is saved as 2 parts on the storage device: directory info (which is comprised by file name, time stamp and size info, etc.) and data content.

If the files with original file names and folder structures cannot be opened, one possible reason is the corrupted directory info. There is still a chance to recover the data content with the RAW Recovery method in our software.

3. Why isn't it suggested to recover the files back to the original drive?

The storage structure of the lost files would be altered or damaged by any changes on the drive. If you save the recovered files back to the same drive, the original data structures and data content would be corrupted or overwritten, which causes permanent data loss. So you should prepare another disk to save the files.

4. How can I check whether my data is recoverable or not before purchase?

The Free version helps you save 2GB files to better verify the recovery quality of our product before purchase.

5. How long does it take to scan the drive?

It strongly depends on the capacity of your hard drive and the performance of your computer. As reference,most drive recoveries can be completed in around 10 to 12 hours for a 1-TB healthy hard drive in general conditions.

About Data Recovery Wizard

It's super easy to recover 250+ types of files after deletion, disk formatting and virus infection. Click the links and compare the difference of each version.