What Happens to Deleted Data as Fast As Possible

[@Chris_Cross]

2:38 This just gets weirder and weirder the longer you look.

[@LucyWings]

ikr

[@sock8211]

Brain.exe stopped working

[@dscrafted]

It's just America what do you expect

[@oceanix91]

The guns

[@HeenaPatel253]

Omg that is so weird

[@18T220]

If you want to wipe your drive I recommend CCleaner it has up to 7 passes, It's useful for deleting horse porn...

[@shadoom]

and horse porn only dont try it with goatsex all hell breaks loose

[@TheWhammyKablammy]

I'd recommend Acronis if you really want to be safe, as it even has up to 33 passes I believe.

[@MarioDragon]

That wipes the free space, if you want a total wipe with removal of the OS and everything else you'd probably want something like DBAN nuke software (yes I know the N stands for nuke)

[@CaptainCandycorn]

MarioDragon I use DBAN every time I work on a computer that requires a new OS or a OS reinstall

[@Tmaxx101399]

18T220 Mine goes up to 35 passes MarioDragon You can wipe entire drives with CCleaner, i.imgur.com/skw7IwT.png

[@MaiMai-wp5vw]

2:57 _speaking of things which are fun and effective, condo-_ Yeah Linus something is very wrong about you

[@rajideva6745]

You haven't met me if you think that's wrong.

[@popefrancis8153]

Yes he needs castration

[@kanhasharma07]

I think his next video should be: Active noise cancellation vs Adaptive noise cancellation As Fast As Possible

[@minute-ai]

Why???

[@sinnerprophet7391]

@@minute-ai You reply to a 5-year-old comment with "why???" ?

[@minute-ai]

@@sinnerprophet7391 What's wrong?

[@mihailcirlig8187]

​@@minute-ai Why???

[@SuperBaseGamer]

What happens if you delete the function to delete?

[@Andreasy2]

your avatar

[@Aimela136]

Your computer generates a black hole.

[@18aidanme]

Impossible.

[@malteeaser101]

A paradox in spacetime. Delete will be deleted and therefore could not delete itself, fixed point in time.

[@18aidanme]

Controversy Owl actually delete cannot be delete do to how Hard drives work in the first place, they don't delete the are, they just register the address as open so you can overwrite it

[@treighpedroche1516]

I always enjoy Techquickie, but I thought this video was particularly well done and on point. Since working professionally in the data erasure field, it has been surprising how little even fairly tech savvy people understand about how computer files work and what happens to them when they are "deleted". Just emptying the Recycle Bin or Trash or deleting even on mobile devices is not enough. The data has to be OVERWRITTEN, to truly be gone and irrecoverable. Like Linus said, overwriting occurs when the operating system in its natural course of running writes new files over where the previous files are located. Reinstalling the OS and just hoping the previous files get overwritten is usually insufficient because drives are large enough these days that it could take quite some time for the OS to get back to writing data to a particular sector. You can test this for yourself by deleting some files on your computer or device and then using one of theses tools to recover those "deleted" files: *Recuva (Windows)- www.piriform.com/recuva * DiskDigger (Android) - play.google.com/store/apps/details?id=com.defianttech.diskdigger&hl=en *Disk Drill (MacOS) - www.cleverfiles.com/ * Recover My Files (Professional, Windows) - www.recovermyfiles.com/ These are some tools that will force overwrites and truly purge data (along with the OS and everything else): * DBAN (Free; outdated, no SSD support) - dban.org/ * KillDisc (Free/Freemium) - www.killdisk.com/downloadfree.htm *WipeDrive (Paid; professional) - www.whitecanyon.com/consumer-wipedrive

[@xXCookieXx666]

Why were y'all beating Eminem with pillows?

[@ProfilipinohackerBlogspot]

haha

[@bgfw3D]

nor a Canuck's hoodie I don't think

[@ploperdung]

what, because he talks fast? He doesn't he's easily understandable

[@funkemunky]

@@ploperdung no he looks like Eminem silly.

[@srinivasanparthasarathy]

i feel bad

[@AnthonyBoetger]

I now have a new routine in the morning of watching an "As Fast as Possible" episode before leaving for work in the morning. It has been fun AND I have been able to help many friends and family with the bits of knowledge I get from watching this channel. Thanks!

[@Hitmanblood]

Luke i felt the anger in your pillow hits on linus. You had so much passion in your pillow thrusts. Lets talk about this some more.

[@mrjkr4945]

OH My.... (face palm)

[@Souls_p_]

I just realized since Fast As Possible is capitalized it could be said as FAP

[@BountiedFish]

FAP: Flipping Angry Pan

[@deankrahling6060]

WAP = Worship And Prayer

[@Souls_p_]

@@deankrahling6060 5 year old comment, neat

[@deankrahling6060]

@@Souls_p_ sorry :L

[@deankrahling6060]

@@Souls_p_ had to happen

[@kingtutspro]

So that's where my porn goes! Haha im kidding.

[@SeamyHD]

yea no one deletes their porn.

[@heheheheheeho]

Haha you're probably not.

[@JazeyHD]

***** who downloads porn anyways

[@GGamer720]

***** They incognito, *cough* sorry, use porn mode in Chrome though.

[@BionicSammich]

I'm a modern day porn enthusiast. I store my porn in the Cloud.

You should have mentioned, that file systems do that, to increase drive's lifespan (either HDD or SDD). Every time you write a bit on a drive, it has a chance, that that bit could just die. Chance, that this would happen would be increased significantly, if all these bits would be overwriten every time a user or system deletes a file

[@stephensnell5707]

Do get your words correct You mean HDD AND SSD

[@VideoRanter]

CPU cache as fast as possible.

[@portaadonai]

3:06 WHO IS THE GENIUS WHO FIGURED OUT A WAY TO GET ME TO WATCH COMMERCIALS?

[@Twomoredays]

Can you make a Video describing the differences between the various filesystems? :)

[@Abu_Shawarib]

Thumbs up :)

[@Maxatal]

No

[@saboo_tage]

I don't usually like videos, but when I do, Fractal Design is involved.

[@brianphilips1092]

LTT the only place where you can whack your boss in the face with a pillow 👍

[@thetradefloor]

1. Pause 2. Press 1 3. You're Welcome

[@jacobwebb8818]

PewDieMeme 3:01 pause

[@Abdullahkhaled]

+k8 what about 5

[@LegionOfEclaires]

+k8 Pause, press 2. Use your imagination ;D

[@ASRANILO]

+k8 what about 10 :v ?

[@sei-core]

for a quick orgasm press 5

[@mahamib]

Pause the video and press 5 Thank me later ;)

[@Logan-kn3gt]

+Skelly Man™ fuck both of you

[@mahamib]

LoganBerry you out of no where...

[@Logan-kn3gt]

Skelly Man™ yeah..i came out of nowhere..thx

[@fireproofnas]

+VotixTM I don't get it?

[@mahamib]

ThunderFist209 press 5 on your keyboard

[@kutlesss429]

These videos are insanely well written. There's never any unclear explanation, even on the more esoteric stuff. Sure, I'm a genius and I understand things instantly anyway... But still.

[@daveys4863]

Fractal has the right idea with this kind of advertising technique. Typically as soon as the ad comes, I close the tab, or go to the next timestamp on the WAN show. I don't give 2 shits about Hulu, or the shaving crap, clothing crap, or the latest Intel promotion. I also wouldn't give a shit about a typical ad for Fractal, but because the "ad" is something I'd watch anyway, I stay interested, and develop a respect for their brand. Really good Marketing, eh?

[@JonatasAdoM]

do not ever stop this series Linus I'm addicted to it

[@hannahkan0622]

Or for those magnetic drives, you could just stick a magnet near it and boom, gone

[@togwam]

It works much better with those monster or neodyium earth magnets

[@iwi3434]

+TOG WAM those would crumble it, so yeah

[@WarrenGarabrandt]

Unfortunately, there is a very good chance that even the strongest permanent magnet would do very little to the data on a hard drive. Most permanent magnets (even the really strong ones) have a coercivity (resistance to magnetic chance) of only around 2000 (which is really strong by the way). Commercial degausers are usually around 4000-5000. Modern hard drives, by comparison, are usually around 5000 - 8000 coercivity. How do you even write to a drive then? Well, it all comes down to the size of the actual magnetic particles on the media. Hard drives write to microscopic sized areas, and use pretty powerful electromagnets concentrated down to that microscopic size to get the job done. Applying a very powerful field to the entire drive would likely damage some data, but I don't know you could guarantee that every single bit of data were destroyed. It's worth noting that even if you manage to wipe the magnetic data completely without destroying the drive housing, you would render the drive useless. Currents induced in the read/write head, motor coils, and rotary voice coils would likely destroy the electronics, and even if that doesn't kill it, the servo data on the drive is written at the factory, and never again, so the drive wouldn't be able to position the read/write head on the platters any more. One work around to this if you wanted to destroy the data magnetically and didn't care about the drive, is to heat the drive up before applying the magnetic field. Like, to 400 or 500 degrees Fahrenheit. This drastically reduces the coercivity of the platters, and will make it easy to destroy the data with any reasonably strong magnet.

[@MatheusLB2009]

My father caught me doing that when i was a child and panicked, happily i didnt do any mess

[@galacticravioli3217]

even easier, just put it in the microwave :-)

[@lilnoobito]

I can't wait until the inevitable video where it's 90% punishment and only 10% content. Keep up the good work.

[@KeyvanKhademRavandi]

a video about diodes, mosfets, capacitors (and CMOS too?). or a video about wattage, voltage, resistance and ohms for your headphones. pls do it :(

[@GoldSrc_]

I don't think that Linus knows that much about electronics, it would be great though.

[@ShadowwwLFS]

There's EEVblog for all your KZbin electronics needs ;)

[@cakeisalie]

Gordon Freeman I agree, but he knows "enough" to be able to distinguish good components from bad ones, not to mention he was an overclocking junkie in the past.

[@GoldSrc_]

the cake is a lie Well, it would be great to have videos about all that stuff, but you can always go to EEVblog, mikeselectricstuff and for the fun stuff go to Photonicinduction.

[@OnlyOneFreedom]

3:13 - Socks and sandals. Really, Linus ?

[@Arek_R.]

+OnlyOneFreedom Every computer boy do it xd

[@Arek_R.]

People say if there is too hot for trainers with socks we should use sandals without socks xd

[@warrengalloway8939]

+OnlyOneFreedom You must be new here. He almost always does that...

[@MrMoon-hy6pn]

You gotta forgive him at this point

[@DemonDante1000]

So, here is my question. I was already aware of all of this. However, the one part that doesn't make sense to me is how *multiple* iterations of writing data (lets say all 0s) is more beneficial than doing it just once. I mean, if you write all 0s to a drive, wouldn't the result be the same in the end: a drive with all 0's written to it? How is a drive which had all 0s written to it once less secure than a drive that had all 0s written to it 4 times?

[@elijaht3223]

From my understanding, overwriting all bits with 0 will still leave magnetic trace that can be read. To confuse the hardware, pseudorandom overwrites of 0s and 1s will allegedly mask that.

[@JuanRemes]

This video is like heaven for GIF makers!

[@sammymorini9748]

i can think of other reasons why the chick at 2:11 was happy ;)

[@neptune.2566]

Good god

[@gamengine1648]

this video actually answered a question that ive had for a while really well

[@superexpansionstudios6814]

The video: is 4:21 Me: we were so close to perfection

[@nou4898]

*laughs in 420*

[@frollard]

Fractal Design is welcome to keep sponsoring these videos. Thanks!

[@drikkel312]

love this video length...

[@Finkelfunk]

There are actually a few other methodes of how to permanently shredder files: You can overwrite the file with a text document containing only 0s filling up just as much space as the previous file did, this is very common practice but not un-restorable. The next ones are 3 and 7 pass algorithms. 3 pass does the same thing like the 0 method in the first step, in the second step it overwrites the data with all ones and in the third step with random data. 7 pass algorithms do the same first two steps and use the remaining 5 steps to overwrite it with random data. One of the last noteworthy things is secure erase which overwrites all of the data with 0s but tells the hard drive not to execute the files split over specific sections.

[@MaxArceus]

Wouldn't simply making a 2 tb sized txt file with only 0s whipe a 2 tb hdd?

[@Finkelfunk]

MaxArceus Believe it or not, this is used as a common method. But the thing about it is that it takes quite a long time and you still might find residues of data. Using the above methods basically renders the data unusable the same way your technique would do and it usually takes a lot less time.

[@MaxArceus]

How could you find residues of data? :0

[@AL_O0]

Just place a magnet on you hard drive (if you have an ssd that won't do anything at all)

[@Eorzat]

I would love to see someone do this seriously hoping that it will help.

[@CondoreComputing]

Doesn't do anything. the strongest magnet type you can get is already in a hard drive. magnetism affecting non CRT electronics is just a misconception

[@meowingmono]

it doesn't work like that

[@jasondong9982]

actually, those magnets in a hard drive are specially designed so that they would not damage the hard drive, with either a piece of metal in between, of which dampens the magnetic field, or a unique pole structure, which limits the extent of it's magnetic field (two north and south poles)

[@Rsslone]

Gosh Fractal Design is the best sponsor ever!

[@moozycla6]

This guy looks like a life-hacker.. I love him! :D

[@David-jn1gg]

Moozy Mathers Dude he's married! XD

[@omarm8917]

Once I deleted all my partitions in mistake when installing ubuntu then repartitioned that drive again and restored my data that weights over 20 GB using a active file recovery application , and that was an awful experience that I wish I avoided but I can't describe how grateful I was seeing my files back

[@MegaMech]

Audio quality in this video near the end took a turn for the worst. Plz fix in future episodes

[@JINORU_]

That's what happens when you go outside. ;)

[@MegaMech]

***** :P

[@TheEvilVargon]

ive got a feeling fractal didnt even sponsor the video. The team just wanted to beat up linus with pillows xD

[@igiftthewax6495]

Sources: VSauce jk jk

[@dragonfyzex1546]

IGiFTTheWax loll

[@MrFrosts]

that hidden bag between pillows at the end we can see best worker

[@Extaticus]

And then, Linus fired his entire staff. Including Luke. Again. :D

[@betabites]

If you are giving your computer to someone else and it is running Windows 10, it is a *very* good idea to factory or hard reset your computer. The option to do this can be found in the Windows 10 settings app. When doing this, Windows will give you two options. The first will just clear the ‘master table’ (as mentioned in the video). One of the options will properly destroy your data and it is clearly marked for if you are giving the computer to someone else.

[@iFLIP007]

love the ending lol...

[@sayanjade]

guys !! a laugh and a chuckle at the end of a technical video !! MISSION SUCCESSFUL !! amazing video !!

[@SwanPandora]

Hi I'm Sarah McLaughlin and want to tell you that if you donate 1 dollar a month to the whf (world host federation) you can stop the abuse of these poor hosts like Linus here. again donate 1 dollar to save host like Linus from abuse by calling this toll free number.

[@90hijacked]

How about sending linus to a BSDM workshop next time? hmmm

[@Slay1337pl]

90hijacked BDSM workshop? What is it, Design-a-dominatrix?

[@joemuis23]

Slay its porn related, don't ask how I know

[@joemuis23]

***** i kinda forgot, i think i was searching categories categories on pornhub, not sure though

[@BlameCo]

BlackJoe23 ***** X'D ............... this entire conversation crashed at the mention of "BDSM" porn came about, ugh sometimes you wish you didn't know stuff..

[@juggawest]

the ending was great you guys need to do more crap like that at the end of every video!

[@CriticalTechReviews]

Hey Linus, you think maybe you could do one on Intel's Itanium processor? I know it's some weird different thing in terms of how it deals with instructions compared to ARM and X86, but that's about as far as I got. Thanks!

[@yamotha]

2:37 are we not gonna talk about how mum and dad are holding bop bops

[@rkmugen]

What about de-magnetizing an HDD?! what about that?!

[@DanielTimberwolf]

Even though I already knew this, I find it as golden info for any computer user.. I use the shredder on Tune Up Utilities to write zeros in the disk when deleting files, and according to my tests no recovery software has been able to restore the latter :)

[@NUSAOfficialYT]

Hillary's deletion method

[@AverageAlien]

lol

[@davidgn40]

and also her thanksgiving party

[@luked.48]

NUSA lol

[@D8W2P4]

Has her IT guy ask Reddit how to do it.

[@ssjchris3090]

RulerL0rd *2017

[@AlexanderWilithinIII]

Came for the knowledge, stayed for Linus being hit with pillows.

[@curtnezirbiulent4845]

Why does this video have a 4K quality option? :D

[@Satialfactory]

Urmom weighs 4k

[@bob-ke5dl]

+Curtnezir Biulent so people can have 'fun' watching for their video to buff

[@taranbasi1457]

Wait has the channel name changed from Linus Tech Tips to this or is this another channel he made?

[@jackieAZ]

+EverythingTutorial Pro another channel

[@olevaar]

You should probably add a notation stating that overwriting data with random bits only really works the way you expect it to on a magnetic disk drive. Actual overwrites on a solid state drive happens when the controller says they need to happen. The controller dictates which blocks are actually utilized, because it also needs to do wear leveling. It needs to make sure that all the blocks are used with the same frequency so that the SSD works well over time. This means that you as a user don't really have total control over when you're overwriting old data. For an SSD, there are other options. ATA Secure Erase for example, will deliver a voltage spike to the cells, effectively flushing the data out, leaving no trace behind. This will slightly reduce drive lifespan.

[@lightyagami3492]

Just use Bleach Bit lol. Thats what Hillary Clinton used to wipe her private email server.

[@natjam0205]

You said that already, no one cares

[@stephensnell5707]

As far as I am concerned myself once I delete my no longer needed files it makes me happy that they are no longer eating up valuable space as once I delete them they are gone forever

[@Salad360]

What if you use an SSD? Isn't TRIM supposed to prevent the data from staying on the drive after deletion?

[@BANHMIZON]

you're just a sticky river :)

[@hiqqo]

Fractal design makes some... intresting choices.

[@MrVoxelStudios]

What if I delete the recycle bin?

[@FracturedPixels]

Dalton Hillman Want a bet?

[@LaccerHS]

Instructions unclear. Deleted my Recycle Bin, computer folded into itself and now there's a black hole in my room.

[@LapuLapuMagellan]

I deleted my porn sites in the history. Is there a chance that those sites will recover? Im afraid if it will.

[@1toncheese]

its never gonna be deleted, even if you manage to be rid of it the isp keeps records that they dont monitor unless told to of places you visit.

[@AposineYT]

1toncheese Unless you make it so that everything the ISP sees is incomprehensible gibberish.

[@1toncheese]

Tokeijikaku through things like tor? so long as you dont use flash files they will just see gibberish on that and im not sure if thats a common issue with all things that make your internet usage look like nothing or just tor.

[@AposineYT]

Tor is just a single application typically used over an unencrypted connection, and the Flash web plugin is a separate application that can query information about that connection without being constrained to Tor. One can, however, encrypt the entire connection, in which case Flash will be covered.

[@GoldSrc_]

1toncheese Don't use Tor.

[@lammatt]

the commercial part is good. do more of that please.

[@samuelgarcia7776]

Linus........ALL OF YOUR VIDEOS ARE VERY VERY INFORAMTIVE AND VERY INTERTAINING!!! I could watch Linus videos all day every day and never get bored!!!!

[@devildoghuss]

Fast as Possible episode recommendation: Types of Data Backup. Full, incremental, differential, etc. Thanks!

[@r.anthony8685]

1st) Look at the quality options! 2nd) Impressive! !

[@cycrothelargeplanet]

Uhm I only see upto 1080 please look at it

[@TriniPhoenix1]

OMG!! Best episode ever. Keep the humiliating things coming!!

[@freon8933]

I also believe there is a feature in Windows 8 in which there are two choices of how to reset your hard drive/computer. Option 1: This will remove all of your files and reinstall windows, everything is back to its factory settings. Option 2: This will remove all of your files, and wipe the hard drive clean of EVERYTHING, mainly to be used if you plan on recycling your computer.

[@rishabhrawat7856]

Love how all the computer ner- I mean introverts are wearing hoods while outside like me

[@dragos-lucian]

You're having way too much fun at work.

[@robertromero5930]

At the end I was either thinking of office space. Or the, "you can't to the wrong neighborhood meme."

[@Aimela136]

Linus, you forgot to mention that there are programs that can either entirely wipe a file's data or wipe all unused space. Much more effective than the data-wiping methods that you mentioned.

[@harrymichaels3877]

Me and my old man upgraded some laptops with ssd’s because their drives had gone the way of the dodo, we ripped the platters out of them and I can confirm pouring leftover pool acid and bashing hard drive platters with a hammer until they shatter life glass was the highlight of my day

[@techy4198]

If you have CCleaner then *permanently removing* files you have *already deleted* is as simple as *Tools* > *Drive wiper* > Wipe: free space only, security: your choice. This basically *overwrites random data* on to any parts of the drive that *aren't registered in the master file table*, so as long as it's *not part of an easily accessible file, it's gone*. Keep in mind that, as helpful as they are, higher security levels take longer to complete, and may take a huge amount of time if the drive has a lot of free space. Just make sure to leave your computer on while it's running (you can use it normally). Also word of warning: *do not forget to set it to wipe free space only!!!* I, Piriform, or anyone else involved will *not* be held responsible if you accidentally delete all the data off your drive.

[@Jinx-ig1fz]

funny things like that just keeps me watching. smash that hard drive into little bits. your data can always be recovered using the right software or hardware.

[@Faust.0]

Actually the most humaliating thing about this video is those socks with sandals.

[@MrPJWayne]

That random picture of the mafia family had me dying tbh

[@SeijuroRen]

If only I could subscribe again, just to show my support for that ending.

[@michaelgutierrez9923]

Good stuff. Knew the bit aboot the bits just being able to be rewritten over, but not that it was that difficult to actually permanently remove it. Also... That ending reminded me a lot of kung pow x-D

[@AndrewBrownK]

OS X has a built in disk utility where you can securely write zeroes over free memory. You can choose multiple passes and verification if you want.

[@Nathan_Woodruff]

@2:38 You Guys are having way too much fun with these videos XD

[@Abodah75]

@GhostexPlays Clicking delete tells the os that it is allowed to write stuff where the game was. So it isnt taking any space anymore, the os will just write something else to where the game was. So you're good :)

[@sylasoce6376]

for those wondering.. this applies to phones. so if your some one that likes to sell there old phone before upgrading, make sure you delete all your photos then take as many photos of nothing as it takes to fill up your storage and then delete it all again.. for those who need more closure. do it as twice or more

[@JAcevedo2580]

When he almost said condoms I lost it and started laughing.

[@Lissmanj]

thank you fractal designs that was a cool ad

[@TheBibliofilus]

And that's why we love Fractal :)

[@Gamerz00760]

Good example being my use of system mechanic file recovery...apparently my upgrade from windows 98 pc, using old hardrive as extra drive, running windows xp, then to windows 7 and now windows 10 system mechanic was able to recover old word documents from back in early 2000s. Not to mention it recovered documents of prior owner of the used 98 pc I had bought. The only problem I had was that many of the documents had lots of missing parts or were corrupted too badly due to overwrites/formats/deletions.

[@mintydog06]

Lol whata with that family photo, they are pointing hugs at each other.

[@johnmoore9588]

2:41 thanks for the new wallpaper

[@Cvolton]

2:11 I once accidentally removed GBs of my grandpa's photos when reinstalling windows, luckily I realized only after I deleted the partition and was able to recover it using some linux utility

[@Escapechris24]

But that gun in the picture doe.

[@assassinlv8274]

There are file-shredding software's as well - which will overwrite random bits multiple times over the location of the files you wish to shred - and then remove the reference.

[@Wifi_Cable]

Probably should have put the fractal design logo somewhere on the screen while doing the sponsor spot for the subliminal effect.

[@CanuckGod]

The one redeeming thing about Linus? The Canucks hoodie :)

[@redtuesdaymusic]

CCleaner (which everyone should have) has empty sector wiping functionality. You can set it to overwrite all the empty data on a drive 1-10 times. 3 is usually enough.

[@hallucinaten]

if that outro was done in one take. you are really good at memorizing lines. actually fuck it. even if that took like 10 takes you are really good at remembering lines.

[@MrMudbill]

On Macintosh computers, you can "safely erase" the trash, which, I believe, overwrites the data with 7 passes. Without knowing exactly how it works, I assume it registers where on the drive this data is located, then rewrites placeholder data in its place, 7 times over before clearing the space. Of course 7 passes CAN be reconstructed, but it's much more difficult. I do think there's some Disk Utility feature that allows for the highly secure 35 passes though.

[@Dimitri912]

This is why I love fractal.... best company

[@Chrisstle]

I bought a Fractal design r2 mini case because of these hilarious ads