I have 4tb wd external hard disk purchased one month before. I accidentally click on format hard disk become 0 byte. I use some data recovery software but no data show. How to recover data?

This is one email from one single pc user asking for data recovery solutions to recover lost data from above WD 4TB external hard drive.

For this kind of format case, the recovery chance is on the windows os and users can confirm the failure detail by checking the hdd by winhex and find out if all sectors are 0000 or not.

Some format cases cause all 0000 and the data is gone; and some other format cases don’t affect the hex data much and the data is still there.

If the format case doesn’t have other failures, users just need to use data recovery software such as r-studio to scan lost files.

If the format case has bad sectors or firmware corruption, users need to use data recovery hardware tools such as DFL-SRP all-in-one data recovery equipment or DFL PCIE data recovery express to fix firmware issue or image the patient HDD or users need to use DFL-DDP to recover lost data by file types.

Any question is welcome to or add Dolphin Skype ID:

This is one Dolphin returning client from Indonesia.


I want to ask do you sell ROM reader? How much is the price?
And how much is the price for DFL-URE?

Read more

What are the best data recovery tools for recovering lost data from external hard drives?
How to repair a corrupted external hard drive without data loss?
How to recover lost data from external hard disk which is not detecting? Read more

DFL-URE Plus is able to connect all USB external portable hard drives directly and if these drives are detected, users can run disk image, selective head image, partition image, data-only image, file extraction, raw recovery, etc. Read more

This is one Dolphin user from Australia.

‘Hi folks

i´ve got a WD external HDD with PCB 2060-810035-000 Error. I cannot access the drive, the PCB is broken.
SO what do i need to access my data?
If I buy your:WD 2060-810035 Recovery Unlock PCB with the HDD Rom Chip Reader. Read more

The following is one new client who wants to buy DFL-SRP USB3.0 for Data Extraction to recover his WD external hard drive.


I have an external Hard Disk WD Mybook 3T, which had fallen from vertical position to horizontal, and after this incident it was not recognized by windows anymore.

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This is one real case study shared by one Dolphin user in Spain. When the user received this case, it is one WD USB3.0 MY BOOK hard drive. When connecting this portable drive to pc, the PC has no response at all.

The user removed the external USB3.0 enclosure and inside is one WD 3.5″ SATA hard drive-WD20EARX-32PASB0 and found also the USB interface was damaged. Read more

One neighbour company brought one patient external hard drive to our data recovery lab this morning for recovering lost data. They told us when connecting this patient drive to pc, no partitions are displayed.

The engineers tested further and found this drive is unallocated within the disk management. Read more

Unrecognized External HDDs are more of the common faults in the daily life and external USB hard drive data recovery are very common cases in all data recovery labs.

how to troubleshoot the such failures and to adopt appropriate data protection measures ? Read more

This is one very common failure of USB hard drives, when users try to connect the USB hard drives to PC by USB cable, users get the messages below:

You need to format the disk in Drive I: before you use it. Do you want to format it?
After this message comes out, users cannot enter the drive and view the files inside at all. Read more