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

by The Slow Mo Guys • 6,558,377 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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+Ashton Floob quantum never made a 100gb hard drive.....do you even know who they are?
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+That Guy on The Street maybe that's why no one invites me to a party.
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I feel like someone stabbed me in the clitoris watching them pour water all over that HDD! God dammit!
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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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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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+Dhalin Why can't you dip a HDD in a mineral oil cooled PC?
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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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+Matthew H i am offering 1$ - dont have more... u guys do?
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start the video at 0:44 and it seems like any ordinary drive running IE
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You guys need to calm down about the HDD being destroyed. There are tons of those things out there and they are cheap.
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+skylar15123 It was dead as soon as they took the top off of it, and even more dead once they took it outside where debris can fall onto the disc.
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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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+yellowcrash10 xD Most people running Linux USUALLY know better...most of the time
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Every electronic devices should be waterproof if there's no electric current running when it's wet.
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I should have finished watching the video before pouring water on my hard drive...
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Sven Rahn Shared on Google+ · 1 month 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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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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+krrrruptidsoless you are one dumb motherfucker. It's the "wet" that mucks everything up? wow, just wow.
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+martin fuentes it's not all the minerals, ever heard of mineral oil cooling.
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Part of me died after this video`s end. I just watched at this disk, his last movement. That was scarier than horror films. And sadly.
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Ladies and gentlemen, the slowest part of your computer, right there!
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No wonder my buddy is a defrag freak.
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What software are you using ? any special camera?
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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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Such a waste, some kid in Africa could have eaten that hard drive :/
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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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Hard drives are water proof if u don't take the casing off
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Yeah they r when I took one apart there was a rubber seal on the case
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The part where the platters and read heads are is water proof, but the pcb and other electronics are not.
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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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Brent Thomas Shared on Google+ · 3 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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Oh, poor hdd, i feel pity .hope for ssd price to drop down
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HOW COME PEOPLE HAVE TO DESTRUCT PERFECT ELECTRONICS SOME WAY OR THE OTHER? Look at TechRax...
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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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+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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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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Windows says i need to clean my hard-drive, how much water do i use?
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R.I.P Hard Drive. Its not water proof. In fact, they make these HDD in DUST PROOF rooms and seal them off. SMH They're VERY sensitive.
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Amr Mohamed Shared on Google+ · 6 months ago
How a Hard Drive works in Slow Motion - The Slow …: http://youtu.be/3owqvmMf6No
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Hard Drives are not water proof! >:(
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But they are not oil proof, so if you do mineral oil cooled don't put the drive in the mineral oil.
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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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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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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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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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Benjamin Humphrey Shared on Google+ · 3 months ago
If you've never seen a hard drive in action you should watch this!
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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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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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Now that's what I call liquid cooling!
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U could get an old CRT monitor and break that in slow motion
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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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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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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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Jman Judkins Shared on Google+ · 2 months ago
Check out this video on YouTube:
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Guys, go VERYYYYYYY SLOWWWWWW TO FUCK YOOOOOUUUUURSEEEEELFFFFFF.
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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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Do read/write operation instead????
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You know what I love the most about hard drives? That little white pillow that catches dust. 
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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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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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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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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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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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That depends on your deffinition of water proof. The discs containing the information is water proof.
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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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do a fire proof test  
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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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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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a bad sector hard drive
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quickly after  0:20 i do believe is writing 
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