Remanence Data^{(Data Remanence)} waxaa loola jeedaa hadhaaga xogta (magnetized) ee ka harta xitaa ka dib markaad si badbaado leh uga tirtirto xogta Hard Disk-gaaga ama qalabka qalinka Mararka qaarkood, xitaa qaabaynta diskku kama saaro xogta oo dhan waxayna ka tagtaa xarfo ku filan si dib loogu dhiso xogta diskkaas. Dabcan, qofka isku dayaya inuu galo xogta la tirtiray wuxuu isticmaalaa software iyo qalab gaar ah. Maqaalkan, waxaan ku arki doonaa waa maxay remanence Data iyo sida loo tirtiro.

Waa maxay Remanence Data

Marka xogta si fudud loo tirtiro iyadoo la adeegsanayo amarka Delete ee ku jira menu-ka macnaha guud^{(Delete command in the context menu)} , waxay si fudud uga saartaa cinwaanka faylka la tirtiray miiska qoondaynta faylka. Xogta noocan oo kale ah waxaa lagu soo ceshan karaa iyadoo la isticmaalayo software kabashada xogta^{(data recovery software)} kala duwan . Taasi waa sababta ay dadku u rabaan inay si badbaado leh u tirtiraan dhammaan xogta iyaga oo isticmaalaya software-^{(secure delete software)} ka tirtiridda ammaan ee si gaar ah loo qaabeeyey .

Software-kan loogu talagalay soo kabashada xogta waxay ku qoraan xogta aan tooska ahayn faylasha la tirtiray. Si kastaba ha ahaatee, software kuwan iyo sidoo kale formatting disk mar walba ka tago xogta qaar ka mid ah. Qaybahan xogta ah waa la soo celin karaa macluumaadkana dib ayaa loo dhisi karaa. Taasi waa sababta aan ugu baahanahay software gaar ah si aan gabi ahaanba uga tirtirno xogta la tirtiray nooc kasta oo kaydinta magnetic.

Xaaladaha qaarkood, cabbirka madaxa darawallada adag ee diskooga waa ka duwan yahay. Markaa waxaa suurtogal ah in marka kaydinta magnetic la tirtiro, in weli la soo celin karo iyada oo la isticmaalayo cabbir madax oo kala duwan. Erayga 'madaxa' halkan waxa uu tilmaamayaa madaxa wax-akhriska/qorista ee ku dhex jira diskooga adag, iyo cajalado.

Si loo tirtiro xogta si sugan si aan dib loo dhisi karin, waxaa jira qalabyo la heli karo oo aan kaga hadli doono qaybaha hoose. Hadda, waxaa muhiim ah in la ogaado in xogta aan si buuxda loo tirtiri karin kayd kasta. Markaa dadku waxay u adeegsadaan wax-ku-beddelka sidii xal si ay xogta hadhay uga dhigaan kuwo aan dib loo soo celin karin.

Sidee si buuxda loo tirtiraa xogta hadhay?

Ereyga "haraadiga" waxa loola jeedaa wax kasta oo (magnetism) ka tago ka dib markii la tirtiro qaybo waaweyn (xogta qalabka kaydinta). Waxaa jira dhowr siyaabood oo wanaagsan oo lagu baabi'iyo sii-haynta xogta:

1. Badbaadada Tirtir amarada HDD
2. Deggaussing
3. Burburinta Warbaahinta.

Fadlan^(Please) ogow inay jiraan barnaamijyo ay ka mid yihiin CCleaner oo ka hadlaya in si ammaan ah loo tirtiro xogtaada. Waxay isku dayaan inay tirtiraan xogta iyaga oo dib u qoraya faylasha la tirtirayo. Taas macnaheedu waa, waxay ku qoraan 1 iyo 0 marar badan, qaybaha kaydinta si loo tirtiro si soo kabashada ay u noqoto mid adag. Taasi gabi ahaanba kama saarin xogta iyo hadhaaga wali way sii jiri doonaan.

Haddi Hard Disk-yada noocaan ah iyo Cajalaadaha Magnet-ka ah la tuuro ama la siiyo cid kale, waxaa jirta suurtogalnimo wanaagsan in qofka hela wadista “nadiifinta” ama cajaladaha laga yaabo inuu weli awoodo inuu dib u soo ceshado qashinka dib u dhiska xogta la isku dayey in la sameeyo. la nadiifiyo.

1] Baabi'in Joogitaanka Xogta - Ammaannada HDD ee Sugan^{(Eliminate Data Remanence – Secure HDD Commands)}

Sugnaanta Erase waa amarro amar-bixineed oo ku shaqeeya firmware-ka sidaas darteed ma awoodi doonaan inay si toos ah ula xiriiraan Hard Disk^{(Hard Disk Drive)} -ga si loo tirtiro. Waxaa loo isticmaali karaa software-ka dhinac saddexaad si amarrada loo fuliyo. Waxa jira qolo saddexaad oo HDD Tirtiridda^{(HDD Erase)} agabka amarradan si ay si ammaan ah u tirtirto xogta. Qalabka noocaas ah waxaa tusaale u ah DBAN (Darik's Boot and Nuke).

Habka ka saarida xogta Sugnaanta Masixi^{(Secure Erase)} waxa lagu fuliyaa iyadoo la qorayo 0 ama 1 in darawalka oo dhan la tirtiro. Waxa aad hore u ogeyd in kombuyuutarada ay adeegsadaan luqadda binary-ga ee leh 0 ama 1 sida xarfo.

Sidii hore loo sheegay, amarrada burburinta xogta ee Secure Ease^{(Secure Erase)} si toos ah uma dhaqmi karaan Hard Disk Drive - ka xitaa haddii aad soo saarto adigoo isticmaalaya Command Prompt^{(elevated Command Prompt)} . Waa inaad isticmaashaa xalalka midkoodna kuu ogolaanaya inaad wax ka beddesho firmware-ka ama aad hore u leedahay qalab ku dhex-jira si aad u soo saarto amarrada firmware-ka.

Fadlan^(Please) ogow in Ammaannada HDD^{(Secure Erase HDD Commands)} ee sugan laga yaabo in aanay ku shaqayn SSD^(SSDs) -yada . Haddii ay tahay in aad tirtirto SSD , waa in aad ka saartaa ama aad jir ahaan u burburisaa SSD oo dhan .

Arrin kale oo leh Amarrada Masiirka Sugnaanta^{(Secure Erase Commands)} leh ayaa ah in aanay qayb ahaan tirtiri karin darawallada Hard Disk-ga. Waxa la isticmaalaa oo keliya marka dhammaan disk-ga adag la doonayo in la nadiifiyo ka hor inta aan la tuurin ama ka hor inta aan HDD la siin qof/saqo/dugsi iwm.

Si aad u nadiifiso qaybaha Hard Disk-ga sida faylalka iyo faylalka, waxaad soo dejisan kartaa^(download) oo aad isticmaali kartaa Eraser . Waxay awood u leedahay inay meesha ka saarto xusuusta

2] Fayadhowrka HDD-yada: Habka Degausing^(Degaussing)

Erayga "degaussing" waxaa loola jeedaa ka saarida magnetic field ka ee kaydinta magnetic: disk adag iyo cajalado. Markaad dejiso diskka magnetka ah, waxaad si fudud uga saartaa raadadka calaamadeysan iyo qaybaha taas oo ka dhigaysa saxanka mid aan shaqaynayn. Waxay meesha ka saartaa magnetism-ka aasaasiga ah ee haya xogta. Taas la'aanteed, xogta lama akhrin karo sababtoo ah miiska qoondaynta faylka oo markaa ma garanayo sida loo galo xog kasta oo wali ku kaydsan wadista. Oo maadaama ay burburiso taarikada birlabeedka, dib looma isticmaali karo.

3] Burburinta Warbaahinta^{(Media Destruction)} Jirka si loo baabi'iyo ku-noqoshada xogta

Xaaladaha ay aad ugu badan tahay xogta shakhsi ahaaneed ee wadista ama su'aasha amniga, habka lagu taliyey waa in jir ahaan loo burburiyo diskka. Isticmaal wax sida dubbe si aad u furto kiiska. Dabadeed ku dhufo taarikada birlababka si aad uga saarto kiiskooda is haysta. Marka la soo bandhigo, saxan kasta oo HDD ah waa la saari karaa oo waa la gubi karaa. HDD-yada^(HDDs) ha ku dhex tuurin dab adoon ka saarin kiisaskooda. Waxaa laga yaabaa inay qarxaan.

Korku wuxuu sharxayaa waxa ay tahay xogta haynta iyo sida loo tirtiro. Waxaan hubaa inay jiri karaan habab badan oo lagu burburiyo haraadigaas. Haddii aad ogtahay mid aanan daboolin, fadlan nagula wadaag faallooyinka hoose.

What is Data Remanence? How do you eliminate or overwrite it?

Data Remanence refers to the remnants of (magnetized) data that are left even after safely wiping data from your hard disks or pen drives. Sometimes, even formatting a disk does not remove entire data and leaves behind enough characters to rebuild the data on that disk. Of course, a person attempting to access deleted data uses special software and hardware. In this post, we’ll see what is Data remanence and how to eliminate it.

What is Data Remanence

When data is simply deleted using the Delete command in the context menu, it simply removes the address of the deleted file from the file allocation table. Such data can be recovered using different data recovery software. That’s why people want to erase all data securely using specially designed secure delete software.

These software for recovering data write random data over the deleted files. However, these software as well as formatting a disk always leave some data behind. These bits of data can be recovered and information can be reconstructed. That is why we need special software to completely wipe of deleted data from any type of magnetic storage.

In some cases, the size of hard disk drives’ head is different. So it is possible that when magnetic storage is deleted, it can still be recovered using a different head size. The term ‘head’ here refers to the read/write head present in hard disk drives, and tapes.

To erase data securely so that it cannot be reconstructed, there are some tools available about which we’ll talk in the sections below. For now, it is important to know that data cannot be completely deleted from any storage. So people use overwriting as a solution to make the remnant data irrecoverable.

How to completely delete remnant data?

The term “Remnant” refers to whatever (magnetism) is left after deleting big chunks (of data on storage devices). There are a couple of good methods to eliminate data remanence:

1. Secure Erase HDD Commands
2. Degaussing
3. Media Destruction.

Please note that there are programs such as CCleaner that talk of securely erasing your data. They do try to erase data by overwriting the files to be deleted. That is to say, they write 1’s and 0’s over and over again, on the parts of storage to be deleted so that recovery becomes difficult. That does not completely remove the data and remnants will still be there.

If such hard disk drives and magnetic tapes are thrown away or given to anyone else, there is a good probability that the person who gets the “cleaned” drive or tapes may still be able to recover the bits for reconstructing the data that was attempted to be cleaned.

1] Eliminate Data Remanence – Secure HDD Commands

Secure Erase is a set of command-line commands that act on the firmware and hence won’t be able to communicate directly with the Hard Disk Drive to be deleted. They can be used with third-party software so that the commands are executed. There are third party HDD Erase tools that run these commands to securely erase data. An example of such a tool is DBAN (Darik’s Boot and Nuke).

The Secure Erase data removal method is implemented by writing 0 or 1 to the whole drive be to be wiped. You already know that computers use binary language that has either 0 or 1 as characters.

As said earlier, the data destruction commands of Secure Erase cannot directly act on Hard Disk Drive even if you issue them using elevated Command Prompt. You have to use solutions that either let you modify firmware or have already built-in tools to issue commands to the firmware.

Please note that Secure Erase HDD Commands might not work on SSDs. If you have to delete an SSD, you have to either degauss it or physically destroy the whole SSD.

Another issue with Secure Erase Commands is that they cannot delete hard disk drives in part. They are used only when the whole hard disk drive is to be sanitized before throwing it away or before giving the HDD to someone/charity/schools etc.

To clean parts of hard disk drives such as files and folders, you may download and use Eraser. It is capable of removing reminiscence

2] Sanitizing HDDs: Degaussing method

The term “degaussing” refers to the removal of the magnetic field from magnetic storage drives: hard disk drives and tapes. When you degauss a magnetic disk drive, you simply remove the marked tracks and sectors thereby making the disk inoperable. It removes the basic magnetism which holds data. Without that, data is not readable because the file allocation table with then not know how to access any data still stored on the drive. And since it destroys the magnetic plates, it can’t be used again.

3] Physical Media Destruction to eliminate data remanence

In cases where it is too personal data on the drive or a question of security, the recommended method is to physically destroy the disk. Use something like a hammer to open up the case. Then strike on the magnetic plates to remove them from their compact case. Once exposed, each plate of the HDD can be removed and burned. Do not throw HDDs into a fire without removing their cases. They may explode.

The above explains what is data remanence and how to eliminate it. I am sure there may be more methods to destroy such remnants. If you know of one that I didn’t cover, please share it with us in the comments below.

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