You can view the DFL case studies and FAQs here so that you can understand how to use the DFL data recovery tools better

Fix WD20EARS full of !!!! by MHDD

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WD20EARS full of !!!! by MHDD
Scan the hdd by MHDD and it’s full of !!! and it seems there’re bad sectors in the SA, how to recover the data? Any ideas are welcome and appreciated.

This is usually caused by a single head damage, you can consider use head map editing in RAM or perform hot swap to extract all the possible data, if you need all data, you may need to swap the heads.

If the hard drive is detected, you can use selective head image of DFL-DE or DFL-DDP;
if the hdd is not detected, you can manage to read the tracks and write the tracks to one donor hdd and then do hot swap;
if the tracks couldn’t be read, the last option is to swap the heads. Read more

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WD USB Hard Drives Look Inside And USB HDD Data Recovery Tips

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Within our data recovery lab, we have received many WD USB hard drives and they are mainly Western Digital 2.5″ My Passport Portable Hard Drive and 3.5″ My Book Essential External Hard Drives.

For WD USB hard drives, they adopt one hardware encryption technology by the USB controller chip and the algorithm of this technology make all data written through the USB ports become encrypted,whether you set password or not.

Within our data recovery cases, engineers meet often the failures of USB hard drives:

Power on the hdd, it spins up without clicking, but the USB port couldnot be detected or the capacity couldn’t be recognized and this is mainly caused by firmware failure and at this time, the hdd has slow response, slow detection, busy, etc. Read more

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WD PCB1692 Safe Mode Tips

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We have handled many WD PCB1692 series 2.5″ hard drives with some tips entering the safe mode.

For 2.5″ PCB1692 or series after, it’s not a problem to read ROM when the hard drives are recognized. But it’s a problem when we tried to write ROM and it’s quite often to make the PCB dead by writing ROM to it.

The success rate is not high to enter safe mode by short connecting on 1692 series. The best way to enter safe mode for 1692 series is to separate the PCB, anyway, pls don’t remove the PCB.

Users just need to remove the two screws on the PCB to control the heads contact and insert one biz card and then power on and wait until the motor stops spinning and then the hdd enters kernel mode and next the ROM can be read and written.This also helps to read firmware modules for some hard drives with bad heads. Read more

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How To Recover Head Damaged Clicking Hard Drives With Bad Sectors In SA

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Patient HDD ID:

Model: WD3200AAJS-00L7A0; Serial Number: WCAV2K523946; PCB 1590 Series

When the hdd was received and it was clicking, by listening to the clicking hard drives, the engineer can tell it’s one head damaged hdd. For users without enough experience, users can use our force loading technology to judge whether it’s firmware clicking or head-related clicking.

Users can always compare the good drives’ working sounds and patient drives’ working sounds, when you listen to them more, it’s easy to tell them from each other. Read more

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2013 Top 11 Disk Imaging Technologies & Features

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For a higher success rate of hdd repair and data recovery, cheers!

1, Smart Disk Image Technology

The program offers users two modes to image the patient hard drive: UDMA Mode and PIO mode and the program is able to detected the health status of each sector based on its response time of being read and written and then the program automatically select the right data transfer mode UDMA or PIO to read each sector differently. That’s to say to read good sectors in UDMA mode and to read Bad sectors in PIO mode and the whole process is automatically done by the program itself.

2, Double Channels’ Images

Advanced imaging features handling disk imaging tasks from two patient disks at the same time, double the disk imaging efficiency from faulty hard drives; Read more

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How To Select Data Recovery Tools Wisely For Data Recovery Success

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There’re many data recovery tools in the market today including different priced and functioned data recovery software and hardware. However, We must disappoint you to say most of the tools are not actually working or meeting users’ needs.

Almost each country has engineers who are able to create data recovery software and therefore most data recovery kits users find are data recovery software utilities. As for data recovery hardware or data recovery hardware and software complex tools, few companies of few countries are able to manufacture them and support them due to the high cost of hardware design, hardware moduling,embedding codes,codes encryption,software integration, software testing, hardware firmware design, interface design
and coding, etc.

Data Recovery Hardware Or Software and Hardware Complex Tools Have A Higher Level Of Solutions To Damaged Hard Drives, Flash Drives, SSDs, etc. and therefore, if users are planning to start a data recovery business, start one in-house data recovery sector or improve their data recovery capabilities, users must select data recovery hardware or software and hardware complex tools. Read more

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How To Repair Damaged Photos And Recover Lost Data-SD Card Recovery

The data recovery engineer got one SD card and according to the owner of SD card, the photos in the card are the wanted data and very important to the client. When the photos were clicked to open, they didn’t open; all photos had the same problem without response when trying to opening them.

The very first thing to do was to image the SD card to keep the original data status and this was also to respect the client and his data. All operations need to be careful and smart.

Next the engineer checked the DRB, FAT table and FDT but they’re all in good status and therefore, needed to diagnose further. Read more

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USB Hard Drive Data Recovery Case Study-WD5000BMVV-11GNWS

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To readers:
This data recovery method and steps are offered uniquely by Dolphin Data Lab, it’s not allowed to post it anywhere else without our permission.

We are using the following case study to explain the methods in details.

HDD ID: WD5000BMVV-11GNWS Capacity: 500GB
PCB number: 20607-701675-004
USB2.0 design

When the hdd was received from client, the engineer connected the hdd to the pc and check if it spun up normally, to find out if it clicked. The diagnosis proved it working fine. Read more

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2.5”Laptop Undetected HDD ROM Damage Fixed By DFL-WDII HDD Repair Tool

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Undetected hdds can be caused by many reasons such as ROM damage, SA module damage,  incompatible SA and ROM, head damage, etc. This case study is to teach the ROM and SA must match by having the same microcode.

Download PDF of this case study here

The hdd was undetected due to ROM damage and let’s now analyze and follow some steps to fix it.

The first thing we could think was to backup the firmware modules when it’s possible, because whether it’s hdd repair or data recovery, we may use the modules in the operations later. Read more

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Repair Dead WD HDD And Modify MrJog Parameters For Data Recovery Purpose

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This HDD ID:

Model: WDC WD1600BB-55RDA0    Family: Starling MicroCode: 20AB
This hdd was received as one dead hdd without any response when the user tried to powered on the hdd.

After initial diagnosis to the hdd, it was due to the burnt PCB causing the death. The user found one compatible PCB of the same PCB number and swaped the PCB.

After swapping the PCB, powered on the HDD, the hdd reached readiness but not detected. Read more

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