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 disk drives and can also access and transmit data at faster pace. As hard drive is easily accessible so physical and software based security needed, in case of selling our PC. This becomes important when a computer changes ownership, for example, or when a hard drive or computer is to be disposed of. In both of these situations, potential access to deleted files may result in the unintentional exposure of confidential information. Software based security options are usually no longer applicable in the case of data erase from a hard disk.
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.
Hard Drive 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.
Finally if you are still uncertain or want to ensure that deleted files are permanently gone, employ a file deletion management system. Today there are many file deletion programs designed to spot and permanently purge your computer of previously deleted files. These solutions initially scan a computer, find previously erased data and finally remove them.
Drive wipe is a process performed on a hard drive to help ensure that all of the data and information on the drive are removed beyond possibility of recovery. Many hard drive wipe programs perform this overwriting process multiple times, which increases the security provided.
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