Yes, we can recover your files, photos, music..

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Hard Disk recovery         FireWire recovery          RAID or NAS storage      USB Flash recovery    

 Hard Disk   External USB,FW,TB    RAID, NAS Server     USB Flash,SSD..   wherever your data is

Inspite of the great diversity of technologies and devices out there, data recovery is surprisingly similar across all of them. Be it a disk or a flash drive, a digital camera or a smart phone, they all use the same funamental approach to storing data. With great oversimplification:

  • The disk/flash is accessible in small chuncs called sectors. (Generally 512 or 2048 byte each.)
  • Each sector is addressed by its sequential number (starting from sector 0, up to available capacity).
  • They are grouped into partitions according to a "partition map" list at the beginning of the device.
  • Each partition has a list (directory) of what files it contains and which sectors belong to which file.

Note: When you erase a file, its entry in the directory is removed and the corresponding sectors marked as available but rarely overwritten until a new file is written on those available sectors. (That is the reason erased files can generally be recovered complete. So, if you erase something by mistake, stop using the computer immediately and just pull the plug, not even shutting down if you can.)

Therefore, to recover your files, we need to:

  • Coerce the raw data sectors out of the failed device (this is usualy the hardest part),
  • Possibly assemble or decryipt them into a meaningful sequence (particularly RAID data),
  • Rebuild the (directory) structures that keep track of which sector belongs to which files,
  • Extract meaningful files from the underlying sea of data,
  • Verify the resuts and return them to their rightful owner ;)

Simple realy... But not always easy ;)

Depending on what actually happened, we may have a different entry point into the list above. The lower down the list we start, the faster and less expensive the recovery.

For example, if files were deleted by accident or a volume formatted, the raw sectors are still easily accessible - so we are starting in the middle of the list.

On the other hand, if a disk drive isn't spinning at all, we must first repair it (however precariously) to a level of being able to accept instructions, then use that to extract the raw data sectors onto a good disk drive (cloning), then deal with the missing sectors and only then search for directory information to rebuild.

The consequence is: When a device starts misbehaving, be careful. Forcing it to retry again and again is only likely to make things worse and reduce your chances of recovering your precious work, photos, records, etc.