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To recover lost data from busy undetected hard drives belongs to advanced-level data recovery cases. Users must use professional data recovery hardware tools, specially firmware repair tools to get the busy undetected hard drives ready and detected.

When the hard drives are busy and undetected, it can be mostly firmware corruption or head failure and sometimes PCB or ROM failure, if PCB failure, mostly, the PCB is not original PCB. Read more

Dolphin data recovery engineer met one interesting Seagate hdd recovery case belonging to 5400.6 Series-ST9500325AS.

When this case was received, the client told our engineer his external hdd dropped to the hdd and couldn’t be detected any more in his pc and no data is available. Read more