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9 August 2023  Amanda J. Brook  Senior Product Manager
 

Summary
Learn how to recover deleted files from mobile hard disks and U disks. Discover the reasons behind file deletion and methods to restore files and repair storage devices.



Table of contents

table iconI. The reasons why the files on the mobile hard disk or U disk are deleted
table iconII. Use Renee Undeleter to recover deleted files in mobile hard disk or U disk
table iconIII. Repair method of mobile hard disk and U disk
recover deleted files from external hard drive

I. The reasons why the files on the mobile hard disk or U disk are deleted

1. Accidental deletion or virus infection

Accidental deletion is a common cause of data loss. If you often accidentally delete data, it is recommended that you regularly clean up the mobile hard disk and U disk.data backup . Viruses in the mobile hard disk or U disk may also cause the files to be deleted. Some viruses will automatically delete the files in the mobile hard disk and U disk. At this time, you can connect the mobile hard disk to the computer and use anti-virus software to scan and kill the virus.

2. Mobile hard disk or U disk failure

When the mobile hard disk or U disk fails, the files in it may also be deleted. This phenomenon often occurs in those mobile hard disks that have reached the end of their service life or are of poor quality. You can check the repair method in the third part and try to repair it.
The above are the common reasons why the files in the mobile hard disk or USB flash drive are deleted. After the data is deleted or lost, please do not store new data into the storage device to prevent data overwriting. Once the data is overwritten, the deleted files will not be recovered. At the same time, you should use data recovery tools to restore the deleted files in the mobile hard disk or USB flash drive as soon as possible.

II. Use Renee Undeleter to recover deleted files in mobile hard disk or U disk

1. What is Renee Undeleter?

Rene.E Laboratory ™ data recovery software It is a software specially used to restore various data files. When you accidentally delete important files, empty the recycle bin, or format the disk/storage, you can use this tool to retrieve the lost data. The software covers four functional modules, including file recovery, format recovery, partition recovery and image creation, which can help you solve all data loss problems in an all-round way.
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Multiple scan modes Fast partition scan, whole partition scan and whole disk scan;

Supported file types Image, video, audio, text, email and so on;

Image creation Create a partition image to read and back up data;

Supported devices SD card, SDHC, SDXC, USB flash drive, hard disk and computer.

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Multiple scan modes Fast partition/whole partition/whole disk scan;

Supported devices SD card/USB/hard disk.

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2. How to use Renee Undeleter to recover deleted files in mobile hard disk and U disk?

As a professional data recovery software, Renee Undeleter not only has comprehensive functions, but also has a very simple operation process. The specific operation steps are as follows:
Step 1: Connect the mobile hard disk and U disk to the computer, download and install Renee Undeleter, and select (Format Recovery).
Note: Do not install on the disk that needs to restore data, so as not to cause data overwriting.
Select formatted recovery option
Data recovery function introduction:
File recovery: Quickly retrieve files lost due to accidental deletion or emptying the recycle bin.
Format recovery: Quickly recover files lost due to inaccessible or formatted partitions.
Partition recovery: Partition information can be analyzed and obtained, and the entire partition can be fully scanned.
Create a mirror: A mirror can be created for a partition to back up the current partition state.

Step 2: Select the mobile hard disk or U disk partition where the files are deleted, and click (Next). Then enter the file scanning process, please wait patiently. The scan time is determined by the partition size.
scan document
Step 3: After the scan is over, you can double-click the file to preview, select the file you want to recover, and click the (Recover) button to save the recovered file on another disk.
Select the file you want to restore and click Recover
After recovering the deleted files in the mobile hard disk or U disk, you can further repair the mobile hard disk or U disk. The following are some repair methods.

III. Repair method of mobile hard disk and U disk

1. Check the system file error of the mobile hard disk or U disk

You can use the file system error checking function that comes with the Windows system to check and repair the mobile hard disk or U disk. Specific steps are as follows:
Step 1: Connect the mobile hard disk/U disk to the Windows computer.
Step 2: Open the file explorer, right-click the mobile hard disk or U disk, select (Properties) > (Tools), and click (Check) in the “Error checking” column.
Check for file system errors
Step 3: Click (Scan and Repair Drive). If errors are found, the computer may need to be restarted to repair the file system.
scan and repair drive

2. Format the mobile hard disk or U disk

Formatting a portable hard drive or USB flash drive can fix many problems. If the mobile hard disk or USB flash drive is not displayed in the PC file explorer, please right-click the (Start) menu and enter (Disk Management) to format the mobile hard disk or USB flash drive. Specific steps are as follows:
Step 1: Connect the mobile hard disk/U disk to the computer. Copy the data of the entire mobile hard disk or U disk to other disks for data backup. If there are many files to be backed up, you can also useProfessional data backup software Make a backup.
Step 2: Open File Explorer, right-click on the removable hard drive or USB flash drive, and select (Format).
Format the mobile hard disk
Step 3: In the format window, select the appropriate file system: FAT32, NTFS or exFAT. If it is used in Windows system, it is recommended to select (NTFS).
Step 4: Click (Start) to start formatting the external hard disk or USB flash drive.
Select the mobile hard disk file system

3. Use Chkdsk to repair damaged mobile hard disk or U disk

As long as the mobile hard disk or U disk is not physically damaged, and the computer has a way to recognize the mobile hard disk or U disk, then you can use the Chkdsk tool to repair logical errors. Note: Please back up important files before using this method. The specific operation steps are as follows:
Step 1: Connect the mobile hard disk/U disk to the computer.
Step 2: After the connection is successful, search for (cmd) in the computer search box, right-click (command prompt), and select (run as administrator).
search command prompt
Step 3: In the command prompt window, enter the command (chkdsk H: /f) (H: is the drive letter of the mobile hard disk, /f is the repair parameter), and then press the (Enter) key. The repair process will take some time, depending on the severity of the damage and the size of the storage capacity. Exit Command Prompt when the repair is complete.
Kind tipsIf this command does not repair the mobile hard disk/U disk, you can also try the (chkdsk H: /r) command, (/r) is also a repair parameter, which can find bad sectors and restore readable information. (/r) includes the functionality of (/f) with additional analysis for physical disk errors.