Taylor Gibb February 15,2: This will work on both Windows 7 and Windows 8.
Old data is simply overwritten as and when needed, but it still remains on the disk. File carving utilities can go through the disk data and recover fragments of files, then stitch them back together without needing the original filesystem entries.
This is commonly offered in commercial "undelete" applications, but more comprehensive methods are available in forensics packages. Wiping a disk with a single pass of random data or zeroes, or whatever really is sufficient to fully remove all traces of the data from the overwritten sectors.
Multiple passes are pointless on modern disks, even against the perceived threat of hardware-level recovery attacks. I refer you to this question for details, but the short answer is that old techniques like magnetic force microscopy MFM were never really effective at recovering overwritten data in the first place on low-density devices, and newer magnetic disks have such high densities that it's physically impossible.
The only exception is flash e. USB flash drives and SSDwhich have additional wear-leveling sectors to increase the lifespan of the device.
The physical sectors are exposed as a logical map to the system, which makes it impossible to directly overwrite all of the data. Even if you overwrite all the logical sectors, old data might remain in the wear-leveling sectors. In order to combat this, some flash device specifications include an encryption requirement to increase the difficulty of recovery because it is no longer possible to directly read data from the memory chips using hardware probes.
Secure Erase is also possible without encryption, but then the drive must actually delete all memory cells, which may take a while.It's irrelevant whether you overwrite all data or not as you don't give the drive away and don't have to shred sensible data.
Regarding the partition table, I would go for MBR/DOS as that's compatible with all systems unless your device is larger than 2 TB.
Jul 21, · This will allow reuse of your hard drive, the theory that your data is still recoverable by forensic analysis by well-financed governments, is based on a misunderstanding of a research paper from the mid 90s by Peter Gutmann, which looked at MFM floppy disks, not modern EPRML hard leslutinsduphoenix.com: K.
Hard drives: Safe ways to dump your data. Got a pile of old drives that you need to wipe before sending them to Silicon Heaven?Or do you want to wipe a drive in a computer that you are selling or.
When setting [Overwrite HDD Data] with [HDD Encryption Setting] in combination, select the preferred option for deleting data stored on the hard disk.
[Encryption Priority]: Overwrites data using a method different from [Mode 1] and [Mode 2] of [Overwrite Method]. Nov 02, · No it will not: the Windows backup utility creates a folder and puts the backup inside that, without harming any existing data on the hard drive.
When you “wipe” a drive, you overwrite all data on it with 0’s, 1’s, or a random mix of 0’s and 1’s. Mechanical Hard Drives vs. Solid State Drives The above is only true for traditional, mechanical hard .