Why Use Data Recovery Experts? Before attempting any form of self data recovery from information gathered from web sites that offer suggestions about hard drive recovery, you need to be informed about what data recovery is and why it takes an expert with a clean room for most data loss scenarios that involve repairing a hard drive.
Do it yourself Hard Drive Repair & the Risks
What is the problem?
Does the drive spin?
If so does it click?
Does the armature kick out?
Do the drives heads vibrate to initiate?
Is there an odd smell to the drive?
If it doesn’t spin do you here a slight or faint ticking sound?
Does the BIOS see the drive?
Does the BIOS see the drive as the correct model?
Are there funny characters showing on boot?
Does the operating system blue screen?
Important things you should be aware of before you do anything to a suspected failed hard drive
Static discharge will kill a hard drive when handling… especially the internal components Dust will destroy your data… DO NOT OPEN!
In my experience I see so many hard drives destroyed by helpful neighbors when the problem was not situated internal of the hard drive assembly. Just because it clicks doesn’t always represent an internal failure.
Swapping the electronics runs the risk of further damage, especially if the revision number of the PCB is different. You will have a greater success of recovery with less risk if the original electronics is repaired.
Full Diagnostic Imaging This is a bit by bit, sector by sector cloning operation of a failing hard drives with bad sector reporting & remapping System Area Repair at Manufacturing Levels The system area of a hard drive is NOT common knowledge.
This is an area of the hard drive that is purely communication between the internal workings of the hard drive assembly (HDDA) & the printed circuit board (PCB)… Unlike data that is stored from track zero, that most commercial data recovery software has access too.
The system area starts at minus zero that proprietary equipment is needed to gain full access to this area for data recovery PCB Chipset Replacement & Reprogramming There is a lot involved when a chip on the printed circuit board that shows signs of failure, this can be caused by a more serious fault or even daisy chain through circuitry when replaced… meaning if you repair one chip it only reveals others that were also affected by the failure Class 100 Dust Filtration Systems Essential for Platter Replacement This is very important if every other diagnostic has pointed to the extraction of the Platters internal of the drive hard disk drive assembly to be removed and reinserted into another matching HDDA.
Any form of contaminants on the platter surface will result on loss of data. but this is not the only precautionary matter, there is platter alignment and balancing to take into account as well. If you mis align a bottom platter to the top platter by a micron it is practically impossible to realign CRC Error Checking Control CRC also known as cyclic redundancy check is where an unreadable bad sector is skipped due to its error reporting system acknowledging that there is an error… if this is disabled there is a higher chance of retaining data Parts The correct parts are sometimes very hard to find… and when you do they are wrong.
One model of a hard drive can be manufactured in three different parts of the world with altered components… yet still retain the same model number, Also a hard drive is very smart; they are designed to work around imperfections of the platters surface.
They will move failing sectors without your knowledge causing what we call a shift point. What this means is there is now unique information hard-coded on the hard drive’s surface that is now unique to the drives electronics. So even if you have the exact printed circuit board with matching numbers on all components, there is no guarantee this will work. If you have suffered data loss and your hard disk is physically damaged, call DTI Data. We are experts at hard drive recovery.
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