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A hard disk drive also known as hard drive or hard disk is a non-volatile storage device, which has the facility to stock up digitally encoded data on rapidly rotating platters and magnetic surfaces. Its design consists of a spindle which can hold one or more flat circular disks known as platters, onto which the data is recorded. It has the ability to store data more than floppy and can also access and transmit data at faster pace. Security of files is conc3rning matter for every one. Whenever it is in the system you are concerned about the security of your file but when you delete any file you feel relax from security of that file. You think that this file has gone out from your hard disk but it is not true fie is still in your hard disk. You should erase your hard drive data securely. However, the main problem that we are coming across is erasing data or files from hard disk permanently. Most of us think that erasing files and emptying the Recycle Bin will help in permanently get rid of those files. In fact, in most of the cases Recycle Bin tells that emptying the Recycle Bin will permanently remove items. But this statement is totally incorrect. You have to understand even after emptying the Recycle Bin; the files can be easily recovered by data recovery programs. Making the best use of delete key on actually removes the shortcuts to the files and makes them undetectable to users. Deleted files still reside on the hard drive and a rapid Google search will automatically show options for system recovery software will further allow restoring that data. Apart from erasing the files or data from hard drive, many people also consider that the effective way to erase hard drive data is by formatting the hard drive. Though formatting the hard drive is somewhat secure than just erasing the files, but you should also note that formatting a disk does erase only the address tables. It makes it much more difficult to recover the files. However a computer specialist would be able to recover most or all the data that was on the disk before the reformat. Disk Wipe is the next new technique that is gaining its popularity these days. Disk wiping is a new secure method and ensure that data, including individually licensed softwares on your computer and storage devices is irrecoverably deleted before recycling. Disk wiping is better method in comparison to erasing files or formatting the hard drive, because this method basically overwrites your entire hard drive with data, several times and once you format your hard drive, you may find it impossible to get back the data which was present on the drive before the overwrite.
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