Why do we have to keep computer disks away from magnets?
931101
Computer disks store data as reversals of magnetic field in the coatings on the disk.  It's like a tape recording laid out on a flat surface.\n\nTherefore, a magnet can flip the field and erase the data.
402683
Electro-magnets use electricity to temporarily align all of the atoms in a ferrous material to a N-S position. When the electricity is turned off, the atoms return to their original misaligned state, losing much of its magnetivity. It never completely loses all of it, as some atoms will remain in the alligned state, creating a "Gauss" feild around it.
706168
We can shape magnetic fields to trap things, but those things must be moving charged particles.\n\nHumans are not magnetic and even a very strong magnetic field will not restrain them at all.
531203
prooly need ifrared thingy\ntry a industrial magnet
976149
your computer hard drive is about totally filled up.\ntry running your clean up programs.\nAnother thing, some anti virus soft wares, have extras for .the puropse of privacy and other stuff.\nIf they are starting to detect stuff harm full to yourPC,they will get in the way of things, and even stop it cold.
808703
Why would you want to remove bytes from your computer? You would have to remove your hard drive.
655372
these are an extra cost. most people choose not to have a hard drive cooler as they probably will get a new pc in 2-3 years.. the extra few dollars isn't worth it, as hard disks generally last 5-6 years with no problems. if they did come with coolers, the price would be higher, and nobody would buy it.
856860
You would need to have the magnet moving, and the power it would take to make it move would be more than any advantage you get out of it. Laws of Thermodynamics.
272622
The best thing to do is stay off D drive before you screw up your computer. If the manufacture wanted you on it, it wouldn't be in the lock position.
1129449
hdd store data in cd/dvd kind of media. not magnetic kind present in floppies.\n\nData is stored in hdd by lasers in form of pits stops etc. (Magnet proof)
1137048
Well it is certainly not a "perpetual motion" type of device. Magnets gradually lose their magnetism as their "disorder" increases. Their "disorder" increases when they contribute to "order" in ferrous objects in their proximity. Need to increase the "order" in your magnet? Wrap a coil around it and connect it to a DC source. Different materials will "retain" different amounts of residual magnetism ("order") after the power source is switched off. Natural magnets would have been exposed over centuries to small, but significant electrical stresses during their formation. They too would gradually lose it as their "disorder" increases. To answer your question - magnets owe it to electrical energy imprinted in ferrous memory.
857984
Wow, your computer still works?  I am impressed...\n\nMagnets will usually distort the monitor, disrupt what being read and written on the hard drive, disaable the mouse or pointing devices and much much more.
987674
Those are called "ferrites".  You can learn more about them from a company called "Fair-rite" (I put their link down below).  A ferrite is really nothing more than a magnet, but one specially tuned depending on the frequency of signal running down the cable, or the current if the cable is a power cable.\n\nElectro magnetic interference (EMI) is all around us, especially with all the electronic devices we have running in the modern home.  EMI flies through the air and, when it contacts something metalic, it "runs along" that metalic line.  In the case of a cable, imagine the clean signal picking up "fuzz" as it runs down the line.  That's pretty much what happens.  A ferrite stops the "fuzz" from getting through to the end of the cable, thus making the signal much cleaner when the end device gets to it.  On a power cord, the ferrite helps prevent too much EMI from leaking out at the end and interfering with the device that the power is for.\n\nI should mention that a ferrite is always "optional" on a line, in other words the cable will work without one.  However, ferrites aren't expensive and they do help with the signal, so most companies will just add one on to the product just in case.
157897
The hard drive does have a magnetic trace of previous files until they have been written over a certain number of times.  This trace can be retrieved by certain software or hardware.  If you suspect that the computer you have has had illicit material on it, then I'd suggest you overwrite these files.  One freeware program that I've heard of does this.  It's called Eraser.  You can find it by going to the site below and searching for the "Software/Project"  and "Eraser".
669781
Magnetic property of a material is due to the arrangement of Domains in it. If you are not of science background, simply think it as it is the arrangement of atoms of the material, which is responsible for its magnetism. If you provide a permanent magnet with electric supply, the arrangement of atoms in it will be disturbed resulting in loss or decrease in its magnetism.\nNot only the electric supply, but heating or even strong jerks can also lead to the disturbed atomic arrangement and therefore decreased or completely lost magnetism.
628335
It really depends on whether the hard disk is still accessible by the computer. If the computer can still read the contents of the hard disk (just that some sectors of the hard disk are spoiled), then you can try to search for disk recovery software.\n\nOtherwise (e.g. if the hard disk head is spoiled), you just have to send it to the professionals. They'd probably open up the hard disk (which you should never do at home because of highly possible contamination) and put it in another hard disk head, or use some powerful microscopes to figure out all the magnetic particles.
651734
Because they are smaller is one reason. But due to the nature of a laptop, the components must be more durable than the ones for desktops because they are constantly being moved around and exposed to higher temps.