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

by The Slow Mo Guys • 6,633,608 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 feel like someone stabbed me in the clitoris watching them pour water all over that HDD! God dammit!
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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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But, technically you can't die a little :-D
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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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start the video at 0:44 and it seems like any ordinary drive running IE
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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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+TheFishCostume I love how he said you were wasting your time, yet he types like an essay to point out the smallest things.. xD
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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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+MP-Tuners Productions They are waterproof tho. The hole is so small the drive needs to be quite deep underwater (I think 25+ meters on newer drives) before the pressure can overcome the surface tension of the water.
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+Vaes Joren Think that depends, I seen some with a bigger hole then most, I seen some that looked like it didn't have any hole. I think it just depends really.
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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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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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+Devan Slone Why are you kidding? It's true, deleting system 32 made my alienware sooo much faster !
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I'd love to see a solid state drive in slow motion.  That would be some exciting footage. lolz
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I should have finished watching the video before pouring water on my hard drive...
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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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+50flamingbottles I guess you are right on the waters dielectric constant being an issue. I shouldn't be comparing traces in a harddrive to those of a spectrum analyser (Took a hell of a long time to find that something as simple as some hotsnot gunk in the wrong place was causing it to read all kind of nonsense). I would be interested in actual research as to how fast water dissolves enought of the metals to cause an issue, and if that would be before actual redox causes issues.
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+Vaes Joren I suspect the primary vulnerability would mechanical, such as oxidation on the steel shaft of the motor. Without the minerals and salts that aid corrosion that would be slowed considerably, though. Water would wash out the bearing lube and wear would increase dramatically. Pots might be next, but they're pretty much gone now. After that would be solder, I'm guessing, then platings. I've got an old hp 412a DC meter that I hot rodded slightly, and modified to measure 3kv FS. It's useful because of the extremely high input impedance, and I think the crude optocoupler and vacuum tubes are cool anyway. The probe cables are captive to avoid triboelectic generation and routed internally with teflon standoffs. It also utilizes teflon, I think, for the voltage divider selector switch wafers, and the manual has several warnings that if you even think about touching any of it, they'll sent someone by to beat you to death.
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22 times in 0.25 seconds , I was like shut up, and I was like damn
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Sven Rahn Shared on Google+ · 2 months ago
Sehr interessant! How a Hard Drive works in Slow Motion - The Slow Mo Guys: https://youtu.be/3owqvmMf6No
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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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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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What software are you using ? any special camera?
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the beer is water proof too, while you don't open it and mix it with water. By the other side, 100% pure water does no conduct electricity, but common water is mixed with many minerals, so it is highly conductive
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Wait a minute, this doesn't look cool enough. Quick, throw water on it
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Such a waste, some kid in Africa could have eaten that hard drive :/
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And that's why neodymium magnets xD
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Quantum stop producong disk drives while we're somewhere around 20GB drives .... and this is even older than that ... it doesnt even have usual ribbon cable as any modern hdd from 1999 onward.
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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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You should try yo put giant magnetic close to hardrive.
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Brent Thomas Shared on Google+ · 4 months ago
How a Hard Drive works in Slow Motion - The Slow …: http://youtu.be/3owqvmMf6No
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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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lol at "That last bit was a lie" Basically those arms move tiny particles around on the spinning discs magnetically and arrange them in a way that when read represents the data on your computer. Hence why you should keep magnets away from HDDs.  Water ruining that process is just a given. hehe.
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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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HOW COME PEOPLE HAVE TO DESTRUCT PERFECT ELECTRONICS SOME WAY OR THE OTHER? Look at TechRax...
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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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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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This is why we have hdd, if they tried this on an ssd the video would be a little boring.
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does that true hdd are waterproof wtf i wasted my old one before using water
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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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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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Of course hardrives are water proof, how else do you liquid cool a computer?
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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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I was tricked, they said it moved back and forth 22 times, it moves back or forth 22 times. got to get your and or or /or and ands or ands and or/ors correct yo.
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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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Hard drives are only waterproofed when the case is closed ...
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still not water proof....
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1,570 people poured water on their hard drive.
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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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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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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 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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Fucking hell, thats an IDE drive too. Christ, I could have used that in my PS2 or one of my old PC's. What a waste, could have used a SATA drive. =[
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I'm too high to watch this stuff Kappa
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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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Amr Mohamed Shared on Google+ · 7 months ago
How a Hard Drive works in Slow Motion - The Slow …: http://youtu.be/3owqvmMf6No
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Benjamin Humphrey Shared on Google+ · 4 months ago
If you've never seen a hard drive in action you should watch this!
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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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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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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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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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change video speed 0.25 now you can see it reads the file centimeter by centimeter and has to read it in pieces it looks like a simple copy and paste of a reasonably sized file.
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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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Do read/write operation instead????
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Jman Judkins Shared on Google+ · 3 months ago
Check out this video on YouTube:
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Nabil Kazi Shared on Google+ · 6 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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+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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that 25x move reminded me of Dragon ball :DD
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Why did the handless man cross the rode? To get to the second hand shop!
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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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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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do a fire proof test  
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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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Damit i poured water on mine now it doesn't work
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he guys try water spiting
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Ouch that last part hurt
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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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Poor hard drive... What has it done wrong to you?
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Pour water on an elephant ear leaf it looks super cool
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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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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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