For example Secure Erase refers to the ATA Secure Erase commands which are run using the firmware of a hard drive. There’s quite a bit of confusing terminology with regards to data erasure. In this walkthrough I show how to securely erase a hard drive using the free tool DBAN – Darik’s Boot and Nuke. The average home user will not have the hardware or willingness to recover said data but it still needs to be mentioned. Yes it damages parts of the drive but data contained on the other parts could still be recovered. And contrary to popular belief drilling holes or shooting your old disk drive with a gun while entertaining will not completely destroy the data on it. Time is another important consideration is because erasing your data may take several hours depending on the method that you choose. For example Solid State Drives (SSD) require more attention to securely erase data than traditional Hard Disk Drives (HDD) because SSDs use flash memory to store data -there is no physical disk being used. While researching how best to go about erasing data I learned there are few things to take into consideration to get the best results.
This mechanism is in fact how data recovery programs are able to get your files back so easily when you accidentally delete something. You may no longer see that file on your computer but it’s technically still there until the OS physically writes new data (i.e new files) in that same space. Without getting too detailed when deleting files on your computer the operating system will simply mark the space storing them as “free” space to be overwritten later by new files -not physically deleting the old ones. Using the Sabrent 2.5” SATA HDD/SDD to USB 3.0 Adapter makes it easy to attach internal hard drives to a PC without any tools. In fact in 2010 a UK study of 200 hard drives obtained online found 48% still had readable information on them. However, just deleting the data off a hard drive is not enough to prevent someone else from potentially recovering your data and putting you at risk of identity theft. As an experienced sys admin I am already in the habit of formatting an old PC hard drive before replacing it with a newer one. Recently I found a few old 2.5” laptop hard drives in storage and figured I would try sell them for a few bucks on Ebay but first I wanted to make sure my personal data on them was erased.
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