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Why You Should Not Attempt Data Recovery on Your Own
There are three reasons why you should never roll up your sleeves and begin the task of data acquisition.
1. Hard Drives are anything but hard.
2. It is a complex task.
3. A wrong move can never be corrected.
Many of us know at least one person who has attempted data recovery from damaged computers. More often than not, this do-it-yourself decision results from a (perceived) expensive quote from a data recovery services specialist.
“Helpful” suggestions for a self-fixing program range from hitting the hard drive, freezing it, shaking the drive, opening and dusting the drive, and so on. In the vast majority of cases when users have tried to recover lost data themselves, it has only resulted in problems that even an expert cannot fix and irretrievable data loss!
Let’s go back to reason number one – a hard drive is delicate and delicate! When trying a hard drive recovery, many people open it and then look at all the components. This will almost always lead to permanent data loss. The hard drive is full of platters, spindles, actuator arms, and other fragile components. The disk platter is the most sensitive part of the hard drive and is so small that even a single speck of dust can damage it. That’s why data recovery specialists actually work in clean, sterile rooms that would put a hospital operating room to shame! The plates that hold the data are made of glass, ceramics, light aluminum alloy. They are then covered with a magnetizable coating. Disc platters are tough on what comes into contact with them and will react negatively to dust, fingerprints and any other debris.
These plates move from the shaft which moves according to the speed determined by a motor. The precious data held within the plate folds is accessed by the actuator arm. When the hard drive is working normally, all these components come together in perfect harmony. So when an untrained hand dips into this unbalanced mechanism, it can set in motion all sorts of disturbances that can result in irreversible data loss.
Take for example one aspect of today’s hard drive technology – mechanical precision. This degree of precision results from the fact that the head assembly of a hard drive is so finely tuned that any contact or operation on it requires specialized tools. The other aspect of electronics is equally delicate and complex. Hard drives are fine-tuned to complement the storage media and the data signals they emit.
Enter the second reason – it really is rocket science. Data recovery, be it hard drive recovery from physical or logical damage, is a complicated process that requires knowledge, tools and environment to be successful. Many times, people will use disk repair software to fix the problem. Really bad idea! These software programs are extremely complex. They work in complex steps and write to disk, which can result in overwriting the original data. Choose a wrong option and you can say goodbye to your data! Disk repair services essentially create a new disk after washing the old data, which is either completely removed or buried deep under the new data.
The common man does not know that data recovery is not as easy as reformatting the failed medium or media. When you select the reformat disk option, it also allows the master boot to be overwritten. Rebooting a system after choosing to reformat and reinstall the operating system is another big mistake.
Data recovery work is performed in clean rooms (eg class 100 clean rooms) by trained laboratory technicians with specific tools and the latest technology. Only this combination allows the hard drive to be scanned completely and safely.
Here’s what a typical data recovery setup looks like – a sealed room with outside ventilation so that even the air in the clean room is not contaminated by air from other parts of the building. There is also a particle seal which acts as an additional barrier to stop dust entering the chamber. Data recovery guys wear very protective gloves, work suits (which don’t have gauze), masks and so on. Before entering the clean room, they are blasted with a jet of air to remove even more dust and contaminants, and only then do they begin the complex work of data recovery. Clean rooms are laboratories that have controlled temperature and humidity levels.
And finally, there is no way to correct errors in a DIY data recovery experiment. Make one wrong move and it can spell death for the data. Even the best data recovery service specialist will not be able to revive the dead data. There are many companies that serve this particular area of data recovery.
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