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How a Hard Drive works in Slow Motion - The Slow Mo Guys

by The Slow Mo Guys • 6,455,114 views

Here is a previously unreleased video which was shot almost 2 years ago for our original trailer. Inside a hard drive. Plus a bit of unnecessary destruction. Shot at 1000fps

I admit... I think I died a little on the inside after seeing that perfectly made hard drive go through the "water-proof" test.
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It was likely beyond use well before they decided to use the drive in this video. Bad sectors, a failing spindle motor, or, a lightning shock (ALL of which are completely valid). No one in their right mind (except those who've more money than sense), would destroy a perfectly good 500GB hard drive. Unless they're idiotic rednecks from the "deep south" of the U.S.
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+ictdude1 HDTune FTW. Crystal is more of a benchmark program. 
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Techncially it didn't move "back and forth" 22 times what happened was it Moved 22 Times it moved "back and forth" 11 Times, because 22 / 2 =11 that aside This is still highly impressive, i have pulled a lot of these apart by the way THE PLATTERS ARE WATER PROOF,   I pull them out and use them as coffee cup coasters it saves me from getting ring marks in wooden coffee table but it never seems to stop amazing me that the magnetic can be controlled so finely to produce this result
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start the video at 0:44 and it seems like any ordinary drive running IE
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Don't believe the people that say HDDs aren't waterproof, it actually makes them read/write faster. The people that say otherwise want to keep the speedy goodness for themselves.
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+CriticalxAmbush So does this actually work? I want to do this but I'm afraid if it will ruin my PC.
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+Trevor Phillips no, adding water will break your HDD. 1)The electronics aren't water proof, 2) the read/writer needed air to avoid scratching the disk, 3)the disk spin faster in air, 4)the air ventilate stuff quicker for cooling.
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To whoever says hard drives are in h2o proof is wrong. The water increases friction, casing the drives to slow down, rendering them unreadable to the heads.
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I think they are just joking, either you didn't watch the video to the end, either that or your really think people would do that, well hell its the internet, they might lol. I did get a 2.5" 120GB 5400RPM drive wet, it was in my grandmothers laptop and the cat knocked over a glass full of water, Laptop was toast, the HDD was dripping wet when I took it out, let it dry and put it in another laptop and it booted right up, I was surprised.
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It isn't that the drives are water-proof, but they are made to be airtight when sealed shut. The reason for this is simple: one single tiny itty-bitty speck of dust on any of those discs will ruin the drive. Therefore, the area with the spindles and discs needs to be airtight. If it is airtight, it is also waterproof. If you dip an HDD (that's unopened and factory-sealed) in water, you'll ruin the exposed circuitry but the discs and spindles should remain intact (as their chamber is airtight).
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Sven Rahn Shared on Google+ · 2 weeks ago
Sehr interessant! How a Hard Drive works in Slow Motion - The Slow Mo Guys: https://youtu.be/3owqvmMf6No
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That was only 11 times, not 22. Or am i missing something??
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+TheCoolStuffHD You probably only counted half the moves because you need to count both when it goes upwards and downwards. You probably only counted when it got upwards. Or you only counted when it got downwards.Hope this makes sense, pretty hard to explain. :/
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Makes me want to switch to SSD for some reason :D
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No wonder my buddy is a defrag freak.
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So, a factoid for anyone one's that's into that kind of thing. Electronics are water proof. It's the minerals and other impurities in the water that allow it to conduct current. H2O won't.
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+qwertyerthanyou Talking about the device that produces the rotory movement for the read arm. Not clear as to what you're referring to.
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+50flamingbottles It's kind of irrelevant anyways, because you'll never have pure H2O. Even if you use distilled water, there will always be some carbonate ions present from the CO2 in the air going into solution.
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I should have finished watching the video before pouring water on my hard drive...
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And to those who have been claiming "it was SATA/IDE". It doesn't matter. The only cable plugged into the drive was a power cable for an external chassis. There was no data cable plugged into the drive chassis. BUT, so many people have watched the video to the point where water was poured on the exposed platters.... But they've commented their ignorance before the video said "Might have been a lie, that last one" It doesn't matter if the drive was E-IDE or SATA. It's toast, end of story (except in supremely extreme cases). P.S. It's disheartening to see people commenting their bullshit on a video, especially before they've watched the full film.
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I say its not 500 GB! at all if you pause before he takes the cover off its a Quantum drive! that brand got bought out by Maxtor in 2001 and by then 120 GB were the very top of the line for large busniesses back then! even 80 GB was very very large! 40 GB was large and 20/30 GB was average also I've never seen a 500GB HDD use IDE connectors...
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+cryptosguns fuck off troll if you got nothing good to say get off.
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+Realgroovy24 Oh but it was good, I'm glad you're working yourself up. Haha
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+Ross Brunson Poe's Law: Without a blatant display of humor, it is impossible to create a parody of extremism or fundamentalism that someone won't mistake for the real thing.
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What software are you using ? any special camera?
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you can also put it in the oven along with other components without it getting damaged because the components themselves get the circuits welded well over the temperature an oven can go
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Brent Thomas Shared on Google+ · 2 months ago
How a Hard Drive works in Slow Motion - The Slow …: http://youtu.be/3owqvmMf6No
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Nice perspective on that! haha waterproof. ROTFL IF you guys need data recovery for that drive give us a call, although I doubt that will help our successful ratio. lol
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only waterproof if it has cover
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+Mark Gardy HDD's are not waterproof at all as they have a breath hole and a circuit board on the bottom.
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Not all hard drives are waterproof it will affect its moving componentes
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you cant tell their sarcasm....
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Hard drives are only waterproofed when the case is closed ...
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still not water proof....
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Oh, poor hdd, i feel pity .hope for ssd price to drop down
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does that true hdd are waterproof wtf i wasted my old one before using water
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Damn! I misread it. It reads "Waterproof". I thought it read "Thermite-proof"... Can I have my money back? What do you mean, I voided my warrantee??
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I first thought my eys had fooled me, but your description is unprecise: It doesn't move forth and back 22times, but it moves forth and back 11times. That's 11times forth and 11times back. (No, I didn't count it precisely in real speed, but made a rough estimation of about 10..)
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Amr Mohamed Shared on Google+ · 5 months ago
How a Hard Drive works in Slow Motion - The Slow …: http://youtu.be/3owqvmMf6No
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1,570 people poured water on their hard drive.
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Of course hardrives are water proof, how else do you liquid cool a computer?
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Thank u for doing that. I wish u could do more computer shit. But the hard drive is the only thing u should do.
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If you don't watch this video to the end, you might be under the false impression that hard drives really are waterproof!
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Hard drives are water proof if u don't take the casing off
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Benjamin Humphrey Shared on Google+ · 2 months ago
If you've never seen a hard drive in action you should watch this!
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They also have higher intelligence than human beings... mainly because they would not try proving that humans are water proof by holding a human under water. Worst slo-mo guys video ever.
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I'm too high to watch this stuff Kappa
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if you use google chrome you can slow down the video to 0.25 and see it move a little better
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Hard Drives are not water proof! >:(
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I clean bad sectors with water too, and i don't need to be concerned for getting them again.
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now i see what happens with my harddrive... or not with the harddrive of my own laptop, cause it broke for the second time 3months after the new one got installed...
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+Billy O'Reilly Nooo, there must be something wrong with the water! P.S.Lol, man you didn't read all of the comments, this is only sarcasm :D
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+h4ck573r I did figure that it was sarcasm. I just decided to respond with an answer to that anyways.
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U could get an old CRT monitor and break that in slow motion
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Now that's what I call liquid cooling!
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The Machine God won't be pleased by this
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Fuck u smart water ad it is just normal water
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Dude you fucked my hard drive!!! Without watching the entire video, I dropped water and it is not working now! Pay it!!
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+SomcallmejameS anything to accelerate natural selection is worth my tax coins
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The writing speed depends and on the memory type like DDR3 or this is only for RAM?
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ok ok  dont shout! We arent all pc genious you know
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+XgamerGR DDR3 is type of random access memory, which has nothing to do with the writing speed of hard drive.
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Why not try this with a 15,000 RPM server HDD (I can supply this)
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I think a HDD is waterproof if the cover is on not off and it also hit the adapter and the power cables so it will really die.
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Jman Judkins Shared on Google+ · 2 months ago
Check out this video on YouTube:
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This is certainly not 500Go hard drive lol I used to mess with those drives in 2001, that was 10 or 15Gb or something... They were quick at this time, but Amperes hungry and noisy as hell
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it was a 40 gb hdd it says on the cover :)
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+The Slow Mo Guys that hdd is NOT a 500gb hdd. it's probebly a 2-10gb hdd from the early 2000's
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Guys, go VERYYYYYYY SLOWWWWWW TO FUCK YOOOOOUUUUURSEEEEELFFFFFF.
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Do read/write operation instead????
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So THAT is the weird sound old PCs do!!!! :O
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+soundslave RAM Disks are relatively cheap, it just at they're volatile, and all the information would be deleted after the computer is powered off.
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+soundslave RAM disks are also free if you want, just make sure you have enough spare RAM in your PC and get one of the programs on this handy dandy list: http://en.wikipedia.org/wiki/List_of_RAM_drive_software
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I wonder how many people are going to pour water on their hard drives before completing the video
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I think it's only waterproof if you don't open it. We had been affected by flash flood last 2011 and our external hard drive was completely submerged. I just cleaned the hard drive's board with clean running water without opening the cover where the spinning discs are. I just let it dry and the drive works perfectly.
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I'm curious as to how many people tried the water thing.
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Pour water on an elephant ear leaf it looks super cool
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A quantum hard drive especially using an ide map to transfer data cannot be 500gb.
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Nabil Kazi Shared on Google+ · 5 months ago
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500 GB under water??? 500 GB HDD ki kimat tum kya jano #slomotion  babu... Jinke pas itne sare movies, games, sws hote hai unso pucho iski kimat
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hahaha.. ekdum sahi :D
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But will it blend?
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What the hell youtube is taking a 4 bit shit.  Everything is 144!!!  :-/
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The water erases the track on the disk and ruins the electronic circuit. That is why the head moved up.
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Water doesn't alter magnetic fields.
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+Keith Jackson The circuit thing was not wrong tho.
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That depends on your deffinition of water proof. The discs containing the information is water proof.
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What the fock did i just see xD
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that 25x move reminded me of Dragon ball :DD
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do a fire proof test  
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I did recently try to reuse the head as a galvo but learned that the position of the head is based on feedback read from the plates. However even when using quite sensitive analog controls it was impossible to stabilize the head at all (without the plates at a unknown but stable location). It would act as a bistable switch. So my questions is this, is the data that the harddrive in this video tries to read located in between the extreme position of that small moment back and forth or is it located  at the extremes where the head is stable for a fraction of a second. Not knowing the answer I guess the most likely from what I know A LOT of redundant data is read along this centimeter wide track and then the actual information is sorted of by firmware, is that the case?
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he guys try water spiting
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My class got to watch this in school today :)
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Poor hard drive... What has it done wrong to you?
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For some reason I have a newfound respect for my hard drive o.o
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Amazing ! I just got RIOT POINTS for FREE !!! Do you want it too ? Visit that awesome page:
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Why did the handless man cross the rode? To get to the second hand shop!
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Ouch that last part hurt
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I think that Hard Drives are waterproof but not the boards with it!
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Damit i poured water on mine now it doesn't work
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+eXPerience94 Yeah, the water washed microscopic pieces of dust, who knows... it could work :D
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+h4ck573r I didn't think of that. The water also provides better cooling. We should try it on the CPU, too. I'm sure it's gonna work better afterwards.
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quickly after  0:20 i do believe is writing 
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a bad sector hard drive
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Obviously if you expose the innards from its protective case what do yo expect?!
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he isn't mad to destroy a working hard  disk and that 500gb
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Congratulations. You made it onto the front page of /r/techsupportgore
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1 SPECK OF DUST is enough to wreck a hard drive, most hard drives after opening the case and exposing them to the normal air will die within 60 minutes.
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