On hard disk drives, cipher.exe is an excellent way to securely wipe free space. But your free space will be securely erased, so nobody will be able to recover your sensitive files or know what activities you have done on the PC by recovering the partially deleted data. Gather that (at one time at least) this could be done without the use of any 3rd Party. Note that on SSDs, this causes some extra writes which will in the long term slightly lessen its life span. As an added security precaution in case a Laptop is lost or stolen (then falls into the hands or some dodgy character) understand some folk - in addition to regularly running Disk Cleanup - also wipe their C Drive's 'Free' Space. Replace "C" with the letter of your drive on which you want to wipe the free space. Type the following command: cipher /w:C.Open an elevated command prompt instance. Free Space Wipe is a simple, stripped-down free space wiper that provides a fast option to prevent disk tools from undeleting files and disk imaging tools from copying old files or file fragments.To erase free space securely with cipher.exe, do the following. This procedure may take a lot of time, depending on how big your disk drive is and how much free space it contains. You had been deleting files before you have started using QuickWiper n To wipe temporary files. You should use it for two reasons: n To wipe previous deleted files. The first pass fills the free space with zero data, the second one fills it with 0xFF numbers, and the final pass fills it with random numbers. Wipe free space with QuickWiper step by step This function overwrites all previously deleted files. To achieve this, cipher runs through 3 passes. It can overwrite the free space so all data it contains will be erased securely. It is a command line tool to encrypt files using EFS (Encrypting File System). ![]() In Windows XP, Vista, Windows 7, Windows 8 and Windows 10, there is a console utility called "cipher".
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