Your videos are so relaxing, your voice is quite melodic and your teaching method is very articulate and informative, Thank you very much. Lol cant stop watching :) Just done 14 of your videos back to back, Love to watch them whilst working out, that way I get a brain workout too :) Peace and thank you :)
No, static magnetic fields don't affect SSDs. If you move the magnets quickly enough, though, that could induce Eddy currents and destroy the internal flash memory wires.
A powerful enough magnet could rip up some of the microscopic levels in it but... it'd need to be *an extremely* powerful magnet. Read a paper years ago about data destruction on SSDs and amongst other things, it talked about magnets and why they do not normally work.
you actually did not just destroy the file system but also the low level formatting. (do not confuse the term formatting as used by windows with low level formatting. what windows actually means is creating a file system) removing the formatting by degaussing it makes it impossible for the controller to figure out where the sectors are. formatting can only be done by the manufacturer.
+TheStiepen There is more. Most hard drives have a very small flash memory on-board that won't fit the firmware and the relocation table (don't confuse with the FAT). So the firmware in the flash memory is just a loader for the large firmware residing on the platters outside of the OS-accessible area. When this gets corrupted, the drive either won't report to the BIOS at all, or the loader firmware will report a recovery identifier that is different from the working drive's.
+TheStiepen However because the Compaq screen still appears and computer at least trys to do something clearly the BIOS was unaffected by the magnet. A replacement harddrive would probably cause the computer to work again.
Naraza - kun you know you can start a computer without a hard drive it will only go as far as the bios screen though the hard drive is really just the parts of the brain responsible for memory storage the heart of a computer is more like the power supply because without that you have nothing it supplies or pumps power into the machine like the heart pumps or supplies blood to the body
brainiac75 hah, oh my god, i knew it, i watched a few of your videos and i was racking my brain to think of what accent it was! at first i though you were norweigan but you sounded too much like my friend Kasper who have the exact same accent :P
Yeah, HDDs store data by setting the ferric oxide particles on it's surface (basically rust particles) to either a positive or negative polarity, each reading as either a 1 or 0. So the magnet probably completely messed that up. Including the OS data in the MBR (master boot record) section of the HD.
+the mre nerd It's modern and it's not... Same type but nowadays the same hdd's work like 10 times faster achieving nearly 200 MB\s and have lot more capacity and also IDE died long years ago.
No problem, thanks for watching. All elements are affected by a magnet, since magnetism is an interaction between electrons that all elements have. It can be ferromagnetism, paramagnetism, diamagnetism etc. but there's always some sort of reaction - big or small. The only substance that can't be penetrated by a magnetic field is a superconductor in its superconducting state ( en.wikipedia.org/wiki/Meissner_effect ).
I would expect... That quite old Compaq computer wasn't too old, since I know it has a 30GB hard drive. Maybe that one was released in late-1990s or early-2000s?
I have removed a number of neodymium magnets from hard drives and also noticed the four poles which I found very interesting and have played with this alignment in many different ways, including some weird phenomena that occurs when you break them. I have often wondered how the magnets do not erase the data and assumed it was because of the shielding plates which I did similar tests as you, but the pole alignment makes a lot of sense, thanks!
well shit thanks for explaining how they get a way with those magnets in hard drives, even though I've wondered that for a long time I've never actually tried to figure it out :P Thanks for the simple yet very informative and enlightening answer :)
I agree with JuryDutySummons - just get DOSBox. Works great, and I have had no problems (except with getting TES II Daggerfall to run, but that is not DOSBox. Also, a friend tried on Linux....something rather and everything went smoothly on it, but not on windows. Complicated on windows. Everything else is fairly simple, as long as you remember the lines (been quite a while so I've forgotten most of them)
A hard drive works by sending magnetic information (0's and 1's) from the actuator head to the platter and the information is stored magnetically. You basically pulled the information and now they are in your 6 inch magnet. It would be extremely hard but getting the data back is possible.
No, static magnetic fields don't affect SSDs. If you move the magnets quickly enough, though, that could induce Eddy currents and destroy the internal flash memory wires.
That bracket not only shields, it conducts magnetic field and it's only half of magnetic circuit, there is 2nd part below coil, sometimes with second magnet. When circuit is "closed" (forms a closed loop) you have almost all magnetic field concentrated in the gap while rest of it is closed trough that metal brackets (magnetic field has no "start" or "end" it forms closed loops). As it is closed trough metal you have very little field that "spills" outside. To prove my point try this: Check how strong is this magnet with and without bracket: Without it it will become weaker on "magnet" side, while it will be same as on the other side where bracket was. With bracket it is very strong on one side and very weak on bracket as seen here.
Ah, it was a maxtor drive. No fucking wonder it failed then. :V (Not that I imagine better manufacturers would have fared all that much better either. Surprising that it lasted as long as it did though, those things have a pretty high failure rate.)
The split magnetic field makes sense when you look at the way the armature coil moves at 1:55. The currents in the two arms of the coil are moving in opposite directions so they need opposite polarity magnetic fields to produce a deflection force in the same direction. Each half of the coil only moves over one half of the magnet. It's really two magnets side by side which happen to be made out of a single piece of material.
If you’re wondering why the pc won’t work, there is data rot on the disk. You will need a new one in order to run it again. Sadly, i can not provide you with a new disk. This is due to the magnetic waves, messing up the data, causing the data to be lost.
Goofygiggles 'Im a minecraft player that doesn't swear'. Two questions. 1. Why don't you swear? 2. Why do you think anyone cares about what language you use... Fucking moron.
you also removed the servo pattern. without it, the heads can't know the exact physical location of the data and they can't even detect the platters. so it's like running without platters. but hey, you can make some kinda support for the magnet with a conveyor belt under it in order to mass destroy sensitive and confidential data in an intelligence agency or something like that
The magnet of the HDD head has a specific field strength appropriate for the HDD..maybe the external magnet just changed the strength of the HDD header magnet... making disk unreadable... If you have a HDD of same model swap the platters and check
Destroying hard drives with magnets is called degaussing them. I have degaussed dozens of drives. It's not unusual to hear them rattle after putting them through, but most have no physical damage. Despite that a drive is completely unreadable and unwritable (it's a complete doorstop), some companies still want their hard drives shredded after being degaussed. As unlikely as it is, they are concerned about the possibility of the drive being put together after it's shredded. Why shred if it's degaussed anyway? Probably just because it's a lot easier to verify that it's destroyed when it's physically shredded. If the customer pays for both, it's worth our while.
Another reason that the magnet inside a hard drive doesn't erase the data probably has to do with why degaussing devices use alternating current through a coil. The bits of data on the hard disk are encoded polarizing the disk surface north and south, a continuous (permanent) magnetic field will only "pull" the south less south and the north more north, until it's of a significant strength to saturate and or weaken the bits to the point of unreadability. So, while the hard drive was undoubtedly corrupted (some key bits were changed), much of the data would likely be recoverable, though at great expense. If you want to erase magnetic media more reliably either I recommend either: physical destruction (sandpaper or thermigh), or a very strong alternating magnetic field from a electromagnet powered by AC electricity. Cheers!
I'm pretty sure a static (non-moving) magnetic field would not harm an hard disk. Of course a magnet moving relative to the drive will mess all the data up.
+Dario Fagotto Not true. The magnet will cause the permeability of the pole shields to cap sooner giving them a lower maximum flux. That's the reason why that pocket LCD backlight got dimmed - the coil in the buck converter got its core rendered impassable for the alternating field.
I would've tested the drive in another system to ensure it wasn't the bios chip or something else that actually caused the drive to error I know you can erase the data but I didn't know that it would make a pc unusable or a drive unusable but being a hardware pc tech, I would have just checked all these things out to try and determine if it was one or the other but that's just me it probably is the HD but cool to know.
imagine if it wasn't global warming that were going through but it was the amount of magnets being made that's messing with Earths own magnetic field .. I bet they wouldn't make a blockbuster film about it though if it was ture
0:34 I recognize this HDD from maxtor! I have the exactly the same except that I have the 40gb version. The HDD model in this video is "6E030L0 and the model of my HDD is" 6E040L0 ". This one dates from December 31, 2003 and works perfectly :D
Yep, the magnetic aligning of the platter aligned to a changed or unchanged state ( 1 or 0 in data terms) was changed to unchanged or corrupted erasing data.
brainiac75 Very interesting how it failed, no physical damage. I assume the firmware and disk info (such as size, layout, ETC) which is stored on a normally unaccessable part of the drive got destroyed. If you were to rewrite this by putting it into the programming mode they use at the factory (or remove controller board and directly controll heads) you could probabally get it running again. Still wouldn't trust it though LOL.
Yeah, HDDs store data by setting the ferric oxide particles on it's surface (basically rust particles) to either a positive or negative polarity, each reading as either a 1 or 0. So the magnet probably completely messed that up. Including the OS data in the MBR (master boot record) section of the HD.
If you remove the disk and swipe it with the magnets that comes with the HDD, would that be enough to destroy it?It even comes with its own copper wire and you can make an electromagnet if the "normal" magnets doesn't work.This would be very convenient since I have an old laptop that doesn't work anymore, but no big magnets.
Thanks so much!!!!! I was trying to figure out how those magnets were magnetized as a normal magnet and the right hand rule with that coil (with that orientation) wouldn’t work. I didn’t have a old hard drive to disassemble so finally i found your video out of many others that didnt touch this aspect. And yes this is the only configuration that would allow the reader to move sideways. A super thanks again.
Writing a data through an HDD uses a Magnetic poles North Pole is 1, South Pole is 0, i think u demagnetize them all, so Buy a new HDD and install an OS
Hello in my school we associate North Pole as a Blue and South Pole as Red (comparing to Africa I guess to be to the South) - That makes me think you grew up somewhere on the south side of Earth?
Interesting, I am fairly sure newer hard drives are magnetically shielded where as that had none or little shielding, maybe because it's old. Also Maxtor drives are rubbish :P
Only just discovered this video, but alternative theory as to drive failure. When the large magnet was on top of the computer, it may have caused a surge of current in the motor driver IC when the field interacted with the coils in motor, destroying portions of the internal circuit. Destroying the magnetic position marks on the platter is far more likely the correct explanation though.
you can only do damage when you cut fieldlines at high speed inducing an emk or electric current from the magnetic field. So static magnet fields do no harm but when you quicly swipe the magnet over it will. in other words you don't even need a strong magnet...
This is the results of a very strong magnetic field butt why you dont see any damage butt pc not starts so i can explain its because the HDD writes on the disc the nuber with electro magnets and if you take one extremly strong magnet it is gona delete all of the data of your HDD an i know ho to fix it its easy to buy another HDD and than instal evethink again i dont know if it has any efekts on ram or SSD but i think the first think what goes die it is your HDD so hes computer biosstarts so hes motherbpard stil working so you need just buy another HDD or safer and much butter SSD because it a lot faster it can read nuber a lot faster so your pc has gona bee a lot faster (i mean the reading of datas) butt you need min. 4 Gb ram so it can runs verry goot the start upp is verry fast only one think is slow it down is the bios but that is just few seconds so its a much safer and faster metodh for owners on these thinks
im sorry im from slovakia mine english is terryble but you know what i mean and i hate noobs what watches only the grammar not the meaning (teachers noobs)
+Adam Varga Proper spelling and grammar are key, especially since there are many nationalities represented here and everybody would make different mistakes. Just try harder; don't hide behind the stiff teacher thing.
+Adam Varga Yes, I've done that here in America. We have a large Latino community as you know. Some of them only speak Spanish. In order to communicate with them, you must learn to speak Spanish. This is why most schools in American offer Spanish as a second language. I've taken three years of Spanish classes (two in High School and one in College). So I know the language somewhat well. Learning a second language is not that hard.
Ben was only partly correct. You not only erased all data but you also erased the architecture information from the platter. if that is erased then the micro controller doesn't know what to do with the drive. In short, the drive is toast unless you can re-write that architecture information.
Three years ago.... The magnet is South on one extremme and North on the other with neutral in the middle to allow the electromagnet to actively be attrated in one direction and repulsed from the other direction at the same time. This provide the most equal torque. The electromagnet experience a slight rotation force instead of up/down force which would affect more the flying high of the heads.
I might be off on this but if I remember correct the HDD magnet is a form of halbach array it creates a focused striped field. Allowing the voice coil to act like a stepper motor.
Not only is the data on the drive gone, so is the data in the service area of the platter. The service area basically contains the drives firmware, without that it won't operate. The way of repairing such damage would be to rewrite the firmware, but that can be considerably hard to get.
HDDs cannot be near magnets due to HDD plates which are magnetic too and keeps the data the magnet destroys it. i wonder if that would work on SSD which i guess not?
You could easily test the magnetic field of that hard drive magnet to see what the lines look like. I would imagine if you put it up to a TV screen, all the distortion would go the same way.
If the magnet erased the hard drive why did it not erased the bios? But I have never seen the effects of a head crash into the platter so I don't even know if you would leave visible marks. What is a surface of the platter made of.
There are more complex geometries that allow for magnet arrays with a stronger field on one side than the other. Google halbach array for further information. A website called gyroscope.com sells kits to build these arrays.
My professors never told me it's possible for a magnet to have FOUR poles.
+Girom Christian Calica Well, it like having four different magnets glued together...
+Kylemsguy *two magnets
Ah yes right.
I love the scientific term for this, "Quadrupole"
bowser jr lol
Your videos are so relaxing, your voice is quite melodic and your teaching method is very articulate and informative, Thank you very much.
Lol cant stop watching :) Just done 14 of your videos back to back, Love to watch them whilst working out, that way I get a brain workout too :)
Peace and thank you :)
14 in a row?!? That's awesome, thank you :D
I will continue to make videos as long as they are well received.
Reminds me of Lemmino
So happy i've got my OS on an SSD, only EMP's can fry it! :D
And time :)
Lars Nyland Magnets also fry it. It uses flash memory. Flash memory also uses magnetic currents.
No, static magnetic fields don't affect SSDs. If you move the magnets quickly enough, though, that could induce Eddy currents and destroy the internal flash memory wires.
A powerful enough magnet could rip up some of the microscopic levels in it but... it'd need to be *an extremely* powerful magnet. Read a paper years ago about data destruction on SSDs and amongst other things, it talked about magnets and why they do not normally work.
dont pretend to be smart noob, flash memory does not uses magnetic currents who came up with that crap? stop sharing fake facts lmao dumbass
you actually did not just destroy the file system but also the low level formatting. (do not confuse the term formatting as used by windows with low level formatting. what windows actually means is creating a file system) removing the formatting by degaussing it makes it impossible for the controller to figure out where the sectors are. formatting can only be done by the manufacturer.
+TheStiepen Yes, I think you're right. It also explains why the HDD controller suddenly couldn't find a HDD at all :)
Exactly what is happening thankfully I don't have to type it myself ;)
+TheStiepen There is more. Most hard drives have a very small flash memory on-board that won't fit the firmware and the relocation table (don't confuse with the FAT). So the firmware in the flash memory is just a loader for the large firmware residing on the platters outside of the OS-accessible area. When this gets corrupted, the drive either won't report to the BIOS at all, or the loader firmware will report a recovery identifier that is different from the working drive's.
+zwz • zdenek Yea, if it was to work again if not damaged would have to be reinstalled by the manufacturer.
+TheStiepen However because the Compaq screen still appears and computer at least trys to do something clearly the BIOS was unaffected by the magnet. A replacement harddrive would probably cause the computer to work again.
Too bad I can give only 1 like
+audiogek
Thanks for the view and like!
You broke my heart. The heart disc drive was made in Singapore. My country!!!
+Naraza - kun hard not heart
+Robert Willgens i called it the heart drive. because without that it doesn't work
Naraza - kun you know you can start a computer without a hard drive it will only go as far as the bios screen though the hard drive is really just the parts of the brain responsible for memory storage the heart of a computer is more like the power supply because without that you have nothing it supplies or pumps power into the machine like the heart pumps or supplies blood to the body
Naraza - kun cheap child labour
Please excuse my cultural stupidity, but what is your accent?
It's a Danish accent. More precise it is a Jutish since I speak Danish with a mild Jutish accent...
Thanks for watching!
brainiac75 Subscribed, and i think its pretty cool so keep up the cool science!
brainiac75 hah, oh my god, i knew it, i watched a few of your videos and i was racking my brain to think of what accent it was! at first i though you were norweigan but you sounded too much like my friend Kasper who have the exact same accent :P
brainiac75 JUTLAND! Whoo
I think you're doing something wrong. I'm getting these weird "free energy" videos in the suggestions.
I've been messing with harddrive magnets for a while. So that's the solution! Gods. I never thought to test their polarity... xD
Yeah, HDDs store data by setting the ferric oxide particles on it's surface (basically rust particles) to either a positive or negative polarity, each reading as either a 1 or 0. So the magnet probably completely messed that up. Including the OS data in the MBR (master boot record) section of the HD.
***** Yes. if the drive is physically good, you can re-install an OS and you'll be set.
+mraiwa1000 +Ben Dover
But, will it blend?
+Buddy Clem
But, will it drive?
I don't know why but I love your voice. So soothing.
Very interesting and informative video, I learned stuff from this. Thank you!
This had been bugging me for a long time.Thanks.
+Ibushi
Thanks for watching :)
+Ibushi Same here :). And what about modern HDD's, aren't they shielded from exterior magnets?
+guily6669 That is a modern hdd
+the mre nerd It's modern and it's not...
Same type but nowadays the same hdd's work like 10 times faster achieving nearly 200 MB\s and have lot more capacity and also IDE died long years ago.
guily6669 Well, i still have IDE hdd's and i use them sometimes when i'm building computers
Very interesting info about magnetism in HDDs.
Everyday we learn something new. Thanks for your explanation.
Thanks for watching. More to come.
i enjoyed watching your videos thanks. can you please tell me if there's an element that a magnet won't affect and its field cant penetrate?
No problem, thanks for watching. All elements are affected by a magnet, since magnetism is an interaction between electrons that all elements have. It can be ferromagnetism, paramagnetism, diamagnetism etc. but there's always some sort of reaction - big or small. The only substance that can't be penetrated by a magnetic field is a superconductor in its superconducting state ( en.wikipedia.org/wiki/Meissner_effect ).
I'm famous now!
Could i have your autograph on my killermagnet? :)
squiggofant Hell yeah! :D
I would expect... That quite old Compaq computer wasn't too old, since I know it has a 30GB hard drive. Maybe that one was released in late-1990s or early-2000s?
You destroyed a hard disk drive that was made in my country.
+wasd2333 You are lucky not to be Chinese, that stuff gets destroyed on TH-cam by millions every day.
+wasd2333 I'm from SG too! Never knew they made hard drives
I have removed a number of neodymium magnets from hard drives and also noticed the four poles which I found very interesting and have played with this alignment in many different ways, including some weird phenomena that occurs when you break them. I have often wondered how the magnets do not erase the data and assumed it was because of the shielding plates which I did similar tests as you, but the pole alignment makes a lot of sense, thanks!
A "Disk controller error" usually would mean part of the motherboard was fried, usually the, y'know, part that "control"s the "Disk"s.
well shit thanks for explaining how they get a way with those magnets in hard drives, even though I've wondered that for a long time I've never actually tried to figure it out :P
Thanks for the simple yet very informative and enlightening answer :)
You should've kept the magnet near the speaker, made good music
The hard drive is not rendered scrap, because you can re program and run the drivers again.
Or not.
Ah the early 2000s. It actually looks mid 90s.
Can you tell me the model of that Compaq? It looks pretty cool for using it as a DOS game machine hahaha
Just get DosBox.
Basically all Compaqs are like this. Fairly simple machines. I'm sure you could find one at a local thrift store for the down low.
I agree with JuryDutySummons - just get DOSBox. Works great, and I have had no problems (except with getting TES II Daggerfall to run, but that is not DOSBox. Also, a friend tried on Linux....something rather and everything went smoothly on it, but not on windows. Complicated on windows. Everything else is fairly simple, as long as you remember the lines (been quite a while so I've forgotten most of them)
JuryDutySummons
It's nice to have a Win98 machine, actually. Some things are in that sweet spot where they neither work on DosBox, nor Win7.
John Locke I have Daggerfall working in dosbox.
A hard drive works by sending magnetic information (0's and 1's) from the actuator head to the platter and the information is stored magnetically. You basically pulled the information and now they are in your 6 inch magnet. It would be extremely hard but getting the data back is possible.
I be gone from this comment section!
David Christmas dude, just... no. really no. That's not how an hard drive works, and the informations are not stored on the magnet, simple as that.
Tobia Apolloni i cri everytiem ;_;
This is not true
+David Christmas I think you're right, it's not lost because nothing is. *Me says entropy in a spooky voice*
5:04 I like how you shaded background to black instead of actually adding black filter to make a transition :)
+mibars
Hehe, a small detail but I really like video editing and experimenting with the endless possibilites :)
SSD's also aren't safe. They also work with magnetic data. If a magnet is put over the SSD the data will still get corrupt as a SSD uses flash memory.
No, static magnetic fields don't affect SSDs. If you move the magnets quickly enough, though, that could induce Eddy currents and destroy the internal flash memory wires.
are u stupid or what? fix ur damned brain before sharing some facts about ssd dumbass
These videos are very interesting. +1 sub.
Thank you! Welcome aboard :)
the hdd are based on magnets........
if you put a magnet in a hdd YOU WILL DESTROY ALL DATA UN THE DISK
Many thanks and very interesting!
Thank you, you have sated my curiosity with out me having to destroy any of my tech.
+technogeek0515
Thanks for watching. I'm thinking about what I should test next :)
That bracket not only shields, it conducts magnetic field and it's only half of magnetic circuit, there is 2nd part below coil, sometimes with second magnet. When circuit is "closed" (forms a closed loop) you have almost all magnetic field concentrated in the gap while rest of it is closed trough that metal brackets (magnetic field has no "start" or "end" it forms closed loops). As it is closed trough metal you have very little field that "spills" outside.
To prove my point try this: Check how strong is this magnet with and without bracket: Without it it will become weaker on "magnet" side, while it will be same as on the other side where bracket was. With bracket it is very strong on one side and very weak on bracket as seen here.
Ah, it was a maxtor drive. No fucking wonder it failed then. :V
(Not that I imagine better manufacturers would have fared all that much better either. Surprising that it lasted as long as it did though, those things have a pretty high failure rate.)
The split magnetic field makes sense when you look at the way the armature coil moves at 1:55. The currents in the two arms of the coil are moving in opposite directions so they need opposite polarity magnetic fields to produce a deflection force in the same direction. Each half of the coil only moves over one half of the magnet. It's really two magnets side by side which happen to be made out of a single piece of material.
If you’re wondering why the pc won’t work, there is data rot on the disk. You will need a new one in order to run it again. Sadly, i can not provide you with a new disk. This is due to the magnetic waves, messing up the data, causing the data to be lost.
Being the owner of a powerful gaming PC, this video irritates me. >.
how?
Goofygiggles 'Im a minecraft player that doesn't swear'. Two questions.
1. Why don't you swear?
2. Why do you think anyone cares about what language you use... Fucking moron.
MrDubsake SOme kids arent allowed to watch swear words AND you didnt have to go to my channel to look at it. Mind your own buisness.
Goofygiggles Lol its a public profile you moron.
Goofygiggles Make it private if you can't take criticism, you ass clap.
you also removed the servo pattern. without it, the heads can't know the exact physical location of the data and they can't even detect the platters. so it's like running without platters. but hey, you can make some kinda support for the magnet with a conveyor belt under it in order to mass destroy sensitive and confidential data in an intelligence agency or something like that
Compuuuda :D
verry cute pronunciation :)
Why Dont You Make Videos Often, Your Voice is interesting and your commentary and content are great
what is the pull force of a hard drive magnet
you cant destry pc running ssd using magnet tho
This guy sounds like Niki Lauda
Niki Lauda sounds like him.
The magnet of the HDD head has a specific field strength appropriate for the HDD..maybe the external magnet just changed the strength of the HDD header magnet... making disk unreadable...
If you have a HDD of same model swap the platters and check
Destroying hard drives with magnets is called degaussing them.
I have degaussed dozens of drives. It's not unusual to hear them rattle after putting them through, but most have no physical damage.
Despite that a drive is completely unreadable and unwritable (it's a complete doorstop), some companies still want their hard drives shredded after being degaussed.
As unlikely as it is, they are concerned about the possibility of the drive being put together after it's shredded.
Why shred if it's degaussed anyway?
Probably just because it's a lot easier to verify that it's destroyed when it's physically shredded.
If the customer pays for both, it's worth our while.
Yay finally, I was looking towards your next video brian.
Another reason that the magnet inside a hard drive doesn't erase the data probably has to do with why degaussing devices use alternating current through a coil.
The bits of data on the hard disk are encoded polarizing the disk surface north and south, a continuous (permanent) magnetic field will only "pull" the south less south and the north more north, until it's of a significant strength to saturate and or weaken the bits to the point of unreadability. So, while the hard drive was undoubtedly corrupted (some key bits were changed), much of the data would likely be recoverable, though at great expense.
If you want to erase magnetic media more reliably either I recommend either: physical destruction (sandpaper or thermigh), or a very strong alternating magnetic field from a electromagnet powered by AC electricity.
Cheers!
FUN FACT: Magnets will NOT cause any damage to a SSD drive!
I'm pretty sure a static (non-moving) magnetic field would not harm an hard disk.
Of course a magnet moving relative to the drive will mess all the data up.
+Dario Fagotto Not true. The magnet will cause the permeability of the pole shields to cap sooner giving them a lower maximum flux. That's the reason why that pocket LCD backlight got dimmed - the coil in the buck converter got its core rendered impassable for the alternating field.
I'm just amazed that in 2014 you had a 10-year-old Maxtor drive that still worked at all :)
"Made in Singapore" :OOOOOOOO Time to break conputers
I would've tested the drive in another system to ensure it wasn't the bios chip or something else that actually caused the drive to error I know you can erase the data but I didn't know that it would make a pc unusable or a drive unusable but being a hardware pc tech, I would have just checked all these things out to try and determine if it was one or the other but that's just me it probably is the HD but cool to know.
1999 Computer have hard drive in 2004! Really?
imagine if it wasn't global warming that were going through but it was the amount of magnets being made that's messing with Earths own magnetic field .. I bet they wouldn't make a blockbuster film about it though if it was ture
0:34 I recognize this HDD from maxtor! I have the exactly the same except that I have the 40gb version. The HDD model in this video is "6E030L0 and the model of my HDD is" 6E040L0 ". This one dates from December 31, 2003 and works perfectly :D
Damn your genius. Thought your "graphs" were spot on
Yep, the magnetic aligning of the platter aligned to a changed or unchanged state ( 1 or 0 in data terms) was changed to unchanged or corrupted erasing data.
brainiac75
Very interesting how it failed, no physical damage. I assume the firmware and disk info (such as size, layout, ETC) which is stored on a normally unaccessable part of the drive got destroyed. If you were to rewrite this by putting it into the programming mode they use at the factory (or remove controller board and directly controll heads) you could probabally get it running again. Still wouldn't trust it though LOL.
I think you could have got the HD to run again if you reinstalled windows
Yeah, HDDs store data by setting the ferric oxide particles on it's surface (basically rust particles) to either a positive or negative polarity, each reading as either a 1 or 0. So the magnet probably completely messed that up. Including the OS data in the MBR (master boot record) section of the HD.
.....I'm used to watching Seananners and the other YT people...I'm here learning.
If you remove the disk and swipe it with the magnets that comes with the HDD, would that be enough to destroy it?It even comes with its own copper wire and you can make an electromagnet if the "normal" magnets doesn't work.This would be very convenient since I have an old laptop that doesn't work anymore, but no big magnets.
what model is this pc?
Thanks so much!!!!! I was trying to figure out how those magnets were magnetized as a normal magnet and the right hand rule with that coil (with that orientation) wouldn’t work. I didn’t have a old hard drive to disassemble so finally i found your video out of many others that didnt touch this aspect. And yes this is the only configuration that would allow the reader to move sideways. A super thanks again.
Writing a data through an HDD uses a Magnetic poles North Pole is 1, South Pole is 0, i think u demagnetize them all, so Buy a new HDD and install an OS
Hello in my school we associate North Pole as a Blue and South Pole as Red (comparing to Africa I guess to be to the South) - That makes me think you grew up somewhere on the south side of Earth?
Interesting, I am fairly sure newer hard drives are magnetically shielded where as that had none or little shielding, maybe because it's old. Also Maxtor drives are rubbish :P
How do you pick up the magnet from the metal
Only just discovered this video, but alternative theory as to drive failure. When the large magnet was on top of the computer, it may have caused a surge of current in the motor driver IC when the field interacted with the coils in motor, destroying portions of the internal circuit. Destroying the magnetic position marks on the platter is far more likely the correct explanation though.
Do you still have that computer laying around somewhere? You should try using an msata to IDE drive and reinstall windows 98 on it
you can only do damage when you cut fieldlines at high speed inducing an emk or electric current from the magnetic field.
So static magnet fields do no harm but when you quicly swipe the magnet over it will. in other words you don't even need a strong magnet...
The data on the will not be erased instead the arm gets stuck with the magnet due to read write head acting as electromagnet
What model of computer is this?
Could have been reformatted before you opened it, but who really wants 30G drives anyway?
Video, where you kill the computer was uploaded 6 years ago and i was thinking i will never find this video but you are god! You leave a link
Am I the only one who watched this 100 times and still not bored?
This is the results of a very strong magnetic field butt why you dont see any damage butt pc not starts so i can explain its because the HDD writes on the disc the nuber with electro magnets and if you take one extremly strong magnet it is gona delete all of the data of your HDD an i know ho to fix it its easy to buy another HDD and than instal evethink again i dont know if it has any efekts on ram or SSD but i think the first think what goes die it is your HDD so hes computer biosstarts so hes motherbpard stil working so you need just buy another HDD or safer and much butter SSD because it a lot faster it can read nuber a lot faster so your pc has gona bee a lot faster (i mean the reading of datas) butt you need min. 4 Gb ram so it can runs verry goot the start upp is verry fast only one think is slow it down is the bios but that is just few seconds so its a much safer and faster metodh for owners on these thinks
Adam Varga : punctuation is your friend
im sorry im from slovakia mine english is terryble but you know what i mean and i hate noobs what watches only the grammar not the meaning (teachers noobs)
+Adam Varga Proper spelling and grammar are key, especially since there are many nationalities represented here and everybody would make different mistakes. Just try harder; don't hide behind the stiff teacher thing.
zwz • zdenek so than learn perfectly two languanges than try to spek another one ...
+Adam Varga Yes, I've done that here in America. We have a large Latino community as you know. Some of them only speak Spanish. In order to communicate with them, you must learn to speak Spanish. This is why most schools in American offer Spanish as a second language. I've taken three years of Spanish classes (two in High School and one in College). So I know the language somewhat well. Learning a second language is not that hard.
it's interesting how much technology has advanced. that 40gb drive is about as big as my 4 tb drive.
FINALLY another vid ever scince like 6 months!!!
Thanks for the harder to find info, they would be useless for my magnetic plant water experiment, and apparently for power generation lol
Ben was only partly correct. You not only erased all data but you also erased the architecture information from the platter. if that is erased then the micro controller doesn't know what to do with the drive. In short, the drive is toast unless you can re-write that architecture information.
A Maxtor drive... One great manufacturer, besides Conner.
After thinking about those platters... i broke one and it appeared to be made of glass. That's why there's no damage from magnets.
Three years ago.... The magnet is South on one extremme and North on the other with neutral in the middle to allow the electromagnet to actively be attrated in one direction and repulsed from the other direction at the same time. This provide the most equal torque.
The electromagnet experience a slight rotation force instead of up/down force which would affect more the flying high of the heads.
I might be off on this but if I remember correct the HDD magnet is a form of halbach array it creates a focused striped field. Allowing the voice coil to act like a stepper motor.
The head positioning motor is also called a galvanometer or D'Arsonval Movement, similar to those used in analog multimeters.
Not only is the data on the drive gone, so is the data in the service area of the platter. The service area basically contains the drives firmware, without that it won't operate. The way of repairing such damage would be to rewrite the firmware, but that can be considerably hard to get.
HDDs cannot be near magnets due to HDD plates which are magnetic too and keeps the data the magnet destroys it. i wonder if that would work on SSD which i guess not?
Is it possible to fix the HDD using GParted or something since there is no physical damage just the deletion of mass data
You could easily test the magnetic field of that hard drive magnet to see what the lines look like. I would imagine if you put it up to a TV screen, all the distortion would go the same way.
If the magnet erased the hard drive why did it not erased the bios?
But I have never seen the effects of a head crash into the platter so I don't even know if you would leave visible marks. What is a surface of the platter made of.
They should erase someone hard drive with a magnet in some show.
There are more complex geometries that allow for magnet arrays with a stronger field on one side than the other. Google halbach array for further information. A website called gyroscope.com sells kits to build these arrays.
What model year was that computer? It looks like a 1990s PC
I wonder if it's possible to reconstruct the data allocation table on an ssd destroyed such way. Anyone knows?
throwing 50 this magnets to google for down forever the internet
that speaker thing was so fucking cool.
Error after degaussing likely simply meant the drive was fine but needed to be reformatted.
RUINED BY LOW QUALITY VIDEO RESOLUTION AND FAILCAKE BUFFERING
Rip your copy of Windows 2000 :(