Diagnostics and data recovery from Western Digital MyPassport and Elements

The WD My Passport and Elements Hard Drives are excellent quality external memories. Like any other hard drive, however, they can have defects or fail due to human error.

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Western Digital MyPassport
Table of Contents

Damage to the USB power connector is a typical problem with my passport drives, as after many connections the solders on the board may fail or become unstable.

How to diagnose a damaged USB Connection connector:

Repairing a damaged USB connector is not a strategically correct choice, as incorrect soldering "experiments" could damage internal components.

Most of mypassport wd drives are equipped with 2 flash elements:

  1. FLASH ROM SED
  2. MAIN FLASH ROM

To be able to repair the logic board of a western digital mypassport, it is sufficient to locate electronics with the same factory code and move the information from the MAIN ROM or unsolder the microchip and solder it onto the donor memory.

Major flaws of Western Digital MyPassport external drives

If the PCB is damaged (which is quite rare) you must follow the instructions for repairing the MyPassport PCB:

  1. Extraction of the ROM information
  2. Donor ROM programming

Logical sector corruption (windows cyclic redundancy error) is very common on all mypassport WDs and can be solved with a binary image creation with complex software/hardware specialized in binary surface recovery.

In all cases of magnetic degradation and bad sectors, the wd mypassport will always be recognized by the computer to which it is connected, with the correct serial number and capacity.

Repairing damages to magnetic sectors
How to recover data from MyPassport with bad sectors
Damage to the reading heads
>How to recover data from MyPassport with bad sectors

Damage to the read heads is very common in Western Digital classes and can be of an electronic or physical nature.

In cases of damage to the read heads, the drive may emit internal noises (TICTAC) or not be recognized at all.

How to intervene in case of damage to the reading heads:

If the drive is unable to initialize due to physical damage/degradation, it is necessary to undergo intervention in a clean room, a specific environment for opening and repairing damaged disk devices.

If the drive can be recognized correctly, it is possible with specialized tools to create the Virtual Head Map and recover the data from the disk using only the still working heads.

Specialized software and hardware tools such as MRT, PC3000, and ChallengerOS are required to create the head map.

During the creation of the Head Map, special commands are sent to the drive to compile a map of the head allocations on the logical surface and then produce a selective image reading excluding the damaged sensors.

Solving Relo-List Bug
Solving Relo-List Bug

The RELO-LIST is a function implemented in all western digital hard disks, and specifically, it is an internal function of the drive, not controllable by the user linked to the reallocation operations of the degraded magnetic tracks.

It is very common for discs that have had a significant activity or have unstable heads following functional or physical degradation that the RELO-LIST goes into saturation and paralyzes the functioning of the disc.

In order to solve the problems related to reallocation on relo-list, it is necessary to be able to access the internal firmware of the disk and disable the collection of errors.

To correctly check the operating status of a Western Digital hard drive, follow the following checklist:

  1. check rotation status
  2. MyPassport LED check
  3. connect the drive to the ChallengerOS diagnostic system
  4. open the SYSLOG dashboard
  5. wait for the recognition of the MyPassport drive by checking the system activity in the SYSLOG
  6. check the recognition and the assignment of the correct POSIX handle (e.g. sdc)
  7. if the ChallengerOS was able to assign a correct handle to the device, it is possible to verify the recognition of the drive-by sending the identification request by pressing the "refresh" button
  8. If the Drive has been recognized correctly, a new peripheral can be displayed in the device list data storage (WD10EAVS)
  9. Proceed to the logic diagnostics of the disk unit with the "Device Physical Test" function.




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