Although the information may be overwhelming it can be useful. If damage is obviously physical, for example after dropping a drive, a lab is always the best solution and DIY attempts are almost guaranteed to make the situation worse. Even just repeated read attempts can further damage a drive or cause firmware damage (g-list overflow).
For example, a RAW file system can be due to logical corruption, it is however also a common symptom for physical damage. With sudden data loss a physical cause should not be ruled out before hand, even if the damage appears to be at the logical level. This is true if the data loss has a physical cause and if in-place repairs are attempted (partition table editing, rebuild RAID etc.).Īs a rule of thumb, if the cause for the data loss is known, for example you deleted a file or partition or formatted a partition, it is safe to assume there's no physical cause. Many failed DIY attempts may hamper recovery and add to the price. Most recoveries, even those requiring clean room work do not exceed say $850 but some labs are in to $300 - $500 range even if clean room is required and if no additional parts need to be sourced. I'll address specific question and tools tried (as these are commonly recommended tools) and go somewhat 'broader' so the answer may apply to other data loss scenarios too.
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