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61
votes
11answers
107k views

How to wipe free disk space in Linux?

When a file is deleted, its contents may still be left in the filesystem, unless explicitly overwritten with something else. The wipe command can securely erase files, but does not seem to allow ...
18
votes
4answers
8k views

Is using multiple passes for wiping a disk really necessary?

To stupid people, like me, you would have thought overwriting each bit on a disk would render the data completely unrecoverable. Why do disk wiping tools have the option for multiple passes, i.e. 3 ...
16
votes
5answers
1k views

Is it secure to give someone my laptop with my Dropbox folder saved on it?

My laptop contains my Dropbox folder (under my account). I want to give this laptop to my friend for some time, and he will be using another account. Is it possible that: He will be able to access ...
14
votes
5answers
11k views

Why is my /dev/random so slow when using dd?

I am trying to semi-securely erase a bunch of hard drives. The following is working at 20-50Mb/s dd if=/dev/zero of=/dev/sda But dd if=/dev/random of=/dev/sda seems not to work. Also when I ...
12
votes
7answers
6k views

Does using TrueCrypt makes “file shredding” tools obsolete?

On Windows, I frequently use Eraser, to delete securely the files I remove. I've been looking at TrueCrypt recently, and its whole disk encryption. If I encrypt the whole disk, does that make using ...
11
votes
5answers
570 views

How can I render an SSD permanently inoperable with no chance of data recovery?

On platter drives, when it is time to dispose of them, a degaussing takes care of the data and in most cases erases the factory pre-recorded servo tracks rendering the drive useless. What does one do ...
10
votes
5answers
5k views

How to erase a hard drive with unwritable sectors?

So I have a hard drive that is failing. I want to erase the data on it before sending it for replacement. I'm trying to use dd if=/dev/zero of=/dev/sdXX, but it stops at the first write error. How can ...
9
votes
9answers
2k views

Is there a program to truly delete all deleted files?

I know that on the windows operating system, when you delete a file it's still recoverable. I'd like to avoid simply paving the harddrive with zeros as I would like to keep my OS installation as is, ...
9
votes
7answers
4k views

What is the fastest way to securely overwrite an old hard drive? [duplicate]

Possible Duplicate: Securely erasing all data from a hard drive I'm going to give my HDD away, so I'm writing it full of crap so there is no possibility to recover any of my files I had ...
8
votes
2answers
1k views

How often do you have to wipe/shred your files, to make them not undeletable

If you have a private data on a recent, normal hard drive - how often do you have to delete the data, to make it unrecoverable. Not in the sense, that a forensic team of 20 experts with a budget of ...
8
votes
1answer
5k views

Will microwaving a flash drive destroy the data on it?

After reading the answers on Permanently delete files from a flash drive, where the top rated answer was simply to pulverize it with a hammer, I wondered whether a microwave could be used to the same ...
7
votes
3answers
142 views

Have I bought a faulty SSD?

I've recently acquired a Samsung Evo 840 120GB, but haven't been able to actually use it. The problems started when trying to do a fresh install of Windows 8 on it: I've retried the process with ...
6
votes
7answers
2k views

How to delete my hard drive safely? [duplicate]

Possible Duplicate: Erasing data before selling a computer How do I wipe my hard drive? On my iMac that I had, it had a process where it met some government standard in terms of safety by ...
6
votes
3answers
3k views

How can I securely format a solid-state drive?

When selling / throwing away / giving away HDDs I always use DBAN to do a DoD wipe first. Is this still a valid thing to do on an SSD? Will it have an adverse effect on the SSD's lifespan?
5
votes
1answer
1k views

So did Lenovo BIOS secure erase just brick my SSD?

I tried the "Erase the Solid State Drive in the HDD bay" BIOS feature following these instructions. The message "Now erasing... It may take about 6 minutes." came up. After waiting over three hours, I ...
5
votes
4answers
2k views

Bypass read-only SD card with missing 'Lock' slider

I have an SD card, that is broken, the slider for the "Lock" is gone. When I put it into my computer it turned out to be in read-only, How can I override this with software? I need to format the SD ...
5
votes
2answers
739 views

Can any trusted security sources recommend Eraser - eraser.heidi.ie (a Windows Application)?

Anyone familiar with the quality/security of the secure erasure application ERASER? Or come across any articles from experts about it? http://eraser.heidi.ie/
4
votes
6answers
663 views

What is a safe way to dispose of personal info on an old laptop and what to do with said laptop?

I have an old laptop someone gave me that only has 64Megs of RAM on it and runs WIN XP. I wanted to wipe the drive clean by installing Ubuntu Desktop to remove any shred of personal information on it ...
4
votes
2answers
787 views

Issues with hard disk secure erase

I want to completely wipe all the data and both OSes (Ubuntu and Windows 7) from my hard drive. I tried DBAN but it gives me an error and does not run. I am looking for an alternative. After reading ...
4
votes
3answers
2k views

Securely delete files that were already 'deleted'

So I know that there are many utilities that can delete files securely by zeroing the location (on a regular hard drive here), and there are many utilities that can scan a drive to find 'deleted' ...
4
votes
1answer
736 views

How to destroy file contents without deleting files

My goal is to have files of original size that can't be opened (or recovered) in their respective software such as MS Office Word. My purpose is to simulate presence of files while I don't want to ...
3
votes
7answers
316 views

Getting rid of an old computer

What are the recommended steps to take before getting rid of a computer by either giving it away or throwing it away? Is using Darik's Boot and Nuke (DBAN) enough?
3
votes
6answers
1k views

Erase personal data from corporate laptop [duplicate]

Possible Duplicate: How to secure delete file or folder in windows? I need to delete my data from the company laptop. Nothing special just 2 or 3 folders (I have Dropbox installed on this ...
3
votes
6answers
1k views

Securely format a hard drive [duplicate]

Possible Duplicate: Erasing data before selling a computer I have just taken 8 old 250gb drives out of one of our servers. I need to securely wipe all the data on these drives, before they ...
3
votes
2answers
455 views

How do I wipe an entire hard drive using the Gutmann method? [duplicate]

Possible Duplicate: Securely erasing all data from a hard drive Is it possible to securely wipe a hard drive with the method outlined here using dd and little else? I have an old PC and an ...
3
votes
4answers
3k views

How is OS X Disk Utility's secure erase mode in comparison to other commerical secure delete methods/apps?

Within OS X, the utility Disk Utility has a secure erase for hard drive formatting. It has 1,7, and 33 pass options, which to my knowledge are very good writting random data to the drive. What does ...
3
votes
3answers
393 views

When erasing freespace, why do utilities write random strings of data?

I've been reading about various utilities that erase the free space on your hard drive, and they all talk about doing multiple passes of writing random strings of 1's and 0's using various ...
3
votes
2answers
1k views

Using `shred` from the command line

I need to securely erase some files. I have used shred on linux systems before, so I looked around and found that shred is part of the coreutils package in macports. I did port install coreutils to ...
3
votes
4answers
18k views

How can I securely erase files from a USB drive, using Windows? [duplicate]

Possible Duplicate: How to wipe a USB hard drive [Author edit] Actually I think the duplicate is this one: Permanently delete files from a flash drive [/edit] I have a USB stick returned ...
3
votes
5answers
4k views

How to quickly and effectively wipe a Win7 x64 hard drive

I have a Windows 7 Enterprise x64 system and need to wipe the 1.5TB hard disk drive quickly and effectively. Quick, I guess, is a relative term; so more quickly than I've seen with some wipe utilities ...
3
votes
1answer
352 views

Windows built-in Cipher secure wipe

How secure is the bulit-in Cipher utility that can wipe out unrecoverable data on old harddisk?
3
votes
1answer
3k views

hdparm - how to secure erase SATA SSD over USB

I have been following this guide on how to secure erase an SSD (trying to improve the performance of mine, which currently only writes at about 30mb/s seq). However, I'm using an USB-->Sata docking ...
3
votes
1answer
647 views

Secure delete logs in Mac OS X

Securely erasing data from OS X is easy. But is there a way to securely erase all logfiles (including the system logs contained in some database) without actually messing the system up?
3
votes
1answer
630 views

How Secure Erasing effects SDD life? [closed]

I wonder how "Secure Erase" effects SSD life? Does it shorten? And for re-installing OS which method is efficient (I mean SDD life and performance)? Secure Erase and install Format and install, let ...
2
votes
5answers
539 views

Are there options for disk wiping software that do not require booting into the software first?

I have an external hard disk and a HDD that was formally internal but is now connected via a SATA-to-USB adapter. I'd like to wipe both drives, but I feel uncomfortable booting into DBAN and other ...
2
votes
9answers
1k views

Erasing information off dead computers

I have an old laptop that has a motherboard problem that I want to get rid of. It does not boot, nor run the bios POST. I'm sensitive about leaving information on the hard drive. What is a good way ...
2
votes
2answers
2k views

Harddrive - wipe out “hidden areas” like HPA and DCO also after malware infection

Background - Malware in windows (yes), possibly rootkit/bootkit. Don't want to take any chances. So, wiped drive with DBAN foolishly (PRNG, 8 pass). Later came to know that DBAN does not kill HPA ...
2
votes
4answers
1k views

sdelete alternative on osx

In the sysinternals suite for windows there is this nifty sdelete tool for securely deleting individual files as well as overwriting unallocated disk space with randomness or zeroes ( the -c or -z ...
2
votes
2answers
364 views

Data Shredder software [closed]

We use "eraser" and "o&o safe erase" to shred important documents on hard disk. Does anyone use another software in Windows for wiping, what are the advantages ? Thank you very much.
2
votes
2answers
414 views

Difference between DBAN and dd command to securely wipe a HDD

I have read about dd and see that it can be used to securely wipe a HDD. But there is also a program called DBAN to wipe the HDD as well. I know that using a live gnu-linux ISO I can wipe my HDD by ...
2
votes
2answers
2k views

What are the techniques for securely erasing data in Linux? [duplicate]

Possible Duplicate: How to wipe free disk space in Linux? This question is inspired by What is the best tool for file-shredding on a memory card?, in which brice recommended the simple ...
2
votes
0answers
316 views

Why does my disk ignore erase and write commands to some sectors?

I did an ATA secure erase on an SSD (with SystemRescueCD and hdparm). Some parts of the disk are reset to zero, but some parts are not. In particular, the MBR and the boot sector of a Windows Vista ...
2
votes
1answer
1k views

How to do secure erase of CF card over USB in Linux?

I have a CF card I'd like to erase. My CF card reader is connected to my Linux machine via USB. How do I do a secure erase (i.e., the ATA Secure Erase functionality) of the CF card? I have tried ...
1
vote
3answers
252 views

What is a good method to automatically wipe a directory or drive if I do not check in for a period of time?

I'm looking for a good method to automatically wipe a directory or drive if I do not check in for a specified period of time. (eg: Someone on a cellphone hits me and I die.) The ideal method would ...
1
vote
3answers
2k views

Deleting a file from a network drive

If I have a network drive setup which connects to a specific server. If I delete a file from that network drive, it does not go into my desktop recycle bin and it does not go into the recycle bin on ...
1
vote
5answers
1k views

Bulk erase Zip disks

I have a few dozen old iomega ZIP disks (100MB and 250MB) that I found cleaning house and I'd like to bulk erase them without mounting them on a computer. Any suggestions?
1
vote
2answers
2k views

Best (preferably free) tool to wipe deleted files on an NTFS filesystem [duplicate]

Possible Duplicate: Is there a program to truly delete all deleted files? I am looking for a tool that wipes (overwrites) unlinked files; preferably something that runs as a kind of disk ...
1
vote
1answer
986 views

Is it possible to wipe Windows 7 without using a CD or Flash drive?

I am on a work contract for 1 week, during this time I've been assigned an old laptop which I installed Windows 7 on. When the week is done I want to wipe the system, something like FDisk, really ...
1
vote
4answers
572 views

Using Mersenne twister to wipe disks

Currently when I want to wipe a USB disk with pseudorandom data in Linux I do the following: dd if=/dev/urandom of=/dev/sdb conv=notrunc urandom is very, very slow, it gets to the point where the ...
1
vote
1answer
46 views

Scanning for erased files

Here's what I want to do: Scan for files that have been deleted Erase/wipe the hard drive blocks that those files use to reside on Basically, I'd like to put these blocks through what Eraser does ...