I usually go with the DoD three-pass option. An Eraser option also appears when you right-click on a file in Windows Explorer, allowing you to permanently delete files quickly and easily.
Eraser has a ton of advanced scheduling and file options if you want to securely wipe specific files or sectors of your hard drive on a regular basis. Did you think using Erase was simple?
Again, we suggest at least three. Be sure to select your operating system when downloading the utility; Windows 10 users can choose the Windows 8 option. A note on whole-disk wiping software: Wiping entire drives requires slightly more complicated solutions than the easy-to-use apps mentioned previously.
Once DBAN is up and running in all its blue-and-white glory, you simply select which disk to wipe, and press the M key on your keyboard to select an erasure method. There's even a challenge for data recovery companies to restore anything that has been erased with dd. Nobody has been able to do it. Best part: the drive is usable afterwords.
I've used DoD spec'd erasing programs that actually didnt work the system was bootable afterwords. It take a bit to learn how to use dd. Don't know how it works, and don't care, it's awesome. If you are decommissioning the drives physically, Bustadrive is good choice. Secure Erase. Secure erase has been approved by the U.
In general data erasure techniques when used alone are approved by NIST for lower security sanitization less than secret since the data can be recovered at least in theory. Warning: Issuing any of the following commands can result in permanent data loss.
The SUSE blog suggests these commands:. Seconding dban. Simply writing over the entire disk once will make it safe from anyone who lacks specialized and costly tooks to manually read the data from the drive.
If a disk uses 0's and 1's to hold data, imagine writing everything to 0 makes those 1's into 0. A special tool can read that 0. Wiping it fully twice all 0's, then all 1's is sufficient to make a recovery extremely expensive and require even more time and specialized tools. I use thermite. Of course it's a little hard to donate them to charity, but they sure are thoroughly unreadable.
Your other option is a big magnet, it's fast too. You don't need to get fancy with degaussing, waving a strong magnet can ruin sufficient data, including the error correction bits.
You don't need thermite or nitro, just take the drives apart and take the platters out and keep the voice coil magnets from the head positioning assembly, they're super-strong rare-earth magnets, very useful , and break them. Just taking the platters off the spindles will make it impossible for almost anyone to read them I've read different things about whether it's possible for anyone to get the platters re-aligned , and if you break the platters into a few pieces, that should be it. I guess you could still thermite the platters if you're really worried I need at least 10 rep to post more than 2 links.
So I converted the links to code. Anyway, here goes -. I am no expert, rather an average user,but I have gained some knowledge on the internet. These areas matter in two cases -. If you don't wipe these areas too, and the sophisticated malware has infected them, chances are that your infection will return after a "full erase" and reinstall of windows OS. A forensics guy, might want to see if a criminal has hidden secret data in these areas. Its OS independent i think. Hdparm is a free linux based solution.
BUT, this approach is full of challenges. My system threw up problems in many steps of the above tutorial. To solve all those problems, I had to read more and each step becomes like sub-steps. So, its not as easy as following 10 steps and being done with it.
I am seriously considering throwing away my old hdd and getting a new one. I have wasted.. Btw, if you want to run linux ubuntu distro with minimum hassle, then get it free off their website and install it on a usb flash drive at least 4GB and boot off that flash drive. Once you see ubuntu, then open your browser and download the. Open it with ubuntu software center to install it. When this feature is used there is no guarantee it works correct, wipes that additional space, you are simply told it happens.
Wipe all sectors as in overwrite and destroy content is not actually done for a secure erase. There are some efficiencies to bulk erase of flash memories, but the times are still much MUCH longer than for single block erase.
It's not possible to parallel erase the whole die for reasons of power consumption. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Does ES6 make JavaScript frameworks obsolete? Podcast Do polyglots have an edge when it comes to mastering programming Featured on Meta. Now live: A fully responsive profile. Linked These self encryptions use very long randomly generated keys that are stored on the HD controller itself the circuit board physically within or attached to the disk.
Self encrypted disks can be effectively wiped in a fraction of a second by just changing the encryption key. All is well! Not to sound lazy I will certainly search during the weekend but do you have any links you think are particularly useful in researching this? Internally self-encrypted drives can be very quickly wiped by essentially just destroying the internal encryption key used, just as David explains.
After that none of the data on the disk makes any sense anymore. The user password has nothing to do with the data stored on the disk or how it is encrypted for self-encrypting drives. The user password is just a command access mechanism with which you can prevent someone from performing dangerous commands on the disk, such as running the internal erase functions.
Computer BIOSes typically set their own password on the disk during boot in an attempt to protect your disks from unauthorized access e. So no, the length of the password does not matter at all, as it is just a part of the protocol you use to give advanced commands to the disk. For older disks without self-encryption, the difference between erase mechanisms are as follows: secure erase - defined as writing zeroes over the whole visible disk does not include reallocated sectors enhanced secure erase - uses a more thorough approach of overwriting the whole physical disk including reallocated sectors and parts of the disk not accessible to the user using some manufacturer-specific data patterns can be multiple writes Drives usually have some spare capacity not visible to the user, which is used when sectors fail and need to be internally reallocated.
Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.
0コメント