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Seagate 2.5" Drive Recovery - Failed NAND Chip

We recently had a 2.5" Seagate drive sent in to us which was initially diagnosed as having bad sectors due to the fact that it was spinning but was running slower and slower on the machine to the point where it was not accessible any more. It was also a Laptop SSHD, so sourcing for a matching donor would not be easy since you have to match a certain firmware code which was only available on a certain amount of Seagate laptop drives.

Seagate 2.5 drive recovery SSHD laptop

As it turned out, this drive didn’t just have bad sectors, but it had multiple faults (Firmware, electronic and Mechanical).

This is what the engineers had to do with the drive:

  • Firmware was built from 2 ROMs to allow access to the hard drive and correct the errors and the damaged modules that were present on the drive.

  • Then since the NAND chip on the hard drive had failed, a 2nd Firmware had to be built and modified to ignore the failed chip.

  • We also had to perform a head swap on the drive, because once it had started to spin there was a clicking sound coming from it which suggests that there had been a head crash, so we had to find a matching donor and therefore change the heads.

  • Then a 3rd Firmware had to be built based on the other 2 Firmware’s to allow the New donor PCB (which was found in our stock) to be paired with the drive so that it would act as the original PCB.

  • Once the drive is paired then all the engineers had to do was clone the drive, which was an easy process compared to the above. Cloning completed only an hour after the drive was fully recognised. The drive finished cloning with 0 errors and 0 bad sectors.


It was a long process but the engineers stuck with it and managed to recover the data from the drive even though there were many problems with the drive.

Hard drive failures require immediate action. You need fast, secure results, and R3 offers the solutions you need to effectively maintain your data and system after any type of failure. Call us today at 0800 999 3282 to get started with your unique case.

Posted In: Case Studies | Hard Drive

What Our Customers Say About Us

Firstly, I truly thought all my data was lost (work and private).

But, I would like to thank your company and Andy Butler for the excellent service you gave me for the data recovery from my corrupted NESO (HITACHI) External 500Gb HDD in terms of:

  • The speed of action
  • Going over and above what is expected in terms of customer service
  • Ensuring that I received the software the same day even that the server had experienced some technical difficulties!

Having reviewed the data that I saved from my drive, I found all of the data in there that would have been lost forever.

I can only all heartedly recommend your services to everybody after what I have experienced. It is re-assuring to know that there are still companies and people out there that take their work seriously and are prepared to help other people in their hour of need!

Once again a MASSIVE thank you for all your help, without you I would have been in deep trouble with work and would have lost lots of very valuable and irreplaceable memories forever!

Tasso Papadopoulos (Registered Hearing Aid Audiologist)

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R3 Data Recovery Services are designed to meet the needs of businesses and home users requiring a fixed cost, highly successful data recovery solution.

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​If your hard drive happens to fail, contact our team of experts. Our skilled professionals will be able to reliably recover data on your hard drive and provide industry-leading turnaround times which give you the confidence that's necessary to develop a solid, effective recovery plan.


Call us today at 0800 999 3282 ​or fill out our FREE, no-obligation diagnostics form for immediate help!