Hard Drive Erase
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Removing data from a hard drive, permanently, is something that sounds an awful lot simpler than it proves to be in reality. As we all know deleting a file does not remove the file or its content from the hard drive permanently, data recovery companies can normally aid in the recovery of such files, no doubt other less scrupulous individuals are equally capable of such recovery feats.
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So what lengths do we need to go to in order to ensure that our data is securely removed?
The answer, in short, is that there is no easy method of permanently removing data from a storage media. This does not make it impossible, but does mean that you will normally have to obtain expensive software to help in the task.
Data can only be considered completely erased when it has been overwritten several times, each time using a different method. The level of overwriting usually considered to guarantee that data has been successfully erased is a seven pass overwriting method using software or manual processes that adhere to the DoD 5220.22-M standard for data erasure.
There are many companies that can provide such data elimination services, and there are also a number of software applications that can serve the process including Evidence Eliminator, M-Sweep Pro Data Eliminatior and R-Wipe software from the company behind R-Studio Data Recovery Software.
There are also more permanent methods of data destruction, few data recovery companies can retrieve data from a hard drive where the disk’s platters have been physically destroyed.
While it would not be recommended DIY data destruction is an option you could try but this would mean that you would need to totally dismantle the drive, remove the platters and physically damaging as much of the disk as possible including destroying (shattering ) the disk as well.
There will always be those that are less educated in the filed of data recovery that will have you believe that simply formatting your drive or even conducting a low level format will do the trick. Sadly this is simply not the case. Another common myth is that reinstalling the operating system will suffice but that will remain the myth that it is.
If your data is business critical or extremely sensitive, always ensure that you can have the data certifiably removed from the storage media, whether that media be Flash Memory device, a hard disk drive, a RAID Array, Floppy Disk or CD / DVD Optical Media often only a professional can help you.
Your local data recovery company will be able to advise you on safe hard drive recovery data disposal methods and will probably have a local service. data recovery and data disposal should always be left to professional operators who are happy to certify their work.
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