There are two models, one for cassette tapes, and one for VHS tapes. The same goes for disk drives and floppies.ĭegaussing will make all magnetism on the disk disappear, and ready to be formatted and be error free. When they are not, you will find that the tape head will erase the spot of music where the tape rests on the tape head. This is why you should never keep your disks inside your disk drives for too long, and why tape heads need to be demagnetized. It's caused by a slightly stronger or weaker magnetic field on several spots on the disk. The process of formatting will come across the same magnetic problem on the disk and will cause it to get an error in the same place or multiple places.

Here's a little trick that I have been using since the old days.Įver encounter a floppy disk that keeps giving you an error in the same sector no matter how many times you format it?Īlso known as Degaussing, it will permanently erase a disk and bring it to a state of no format.įormatting a disk is an exact process depending on your PC but the end result is the same.

Floppy disk is not formatted