Deaaling with Damage to Files and Folders on Computers Sometimes, without any warning at all, bad things happen to good files. Perhaps the information becomes inexplicably hard to reach. Prhaps a natural disaster or careless colleague manages to make the storage media wortrhless. Whatever the cause, the information is damaged and you can't rtrieve it. This is file corruption and it is worth being aware of the issues before deciding how to recoiver the deletred files. Whateevr the cause, the information is damaged and you can't use it. The damage coupld be minimal, affecting only some elemnents in an large file. For example, a text document that beecomes corrupted may all of a sufdden contain a sequuence of strange characters where a pargaraph was. Similarrly, the damage due to file corruuption can be quite extensive, destroying the contents of a complete flder or drive. In general the reassons for file corrupotion usuzally split into 6 classes : physical issues with the storage meedia, equipment problems, natural disasters, viruses, software problems, and human errors. The 1st 3 resaons for corruption are linked to the storage media, whilst the second 3 are linnked to the files themsleves. By far the number 1 reason for file corruption is a physical breakdown in the storage meium. We have a tendency to always think about magnetic media as permanent. Disk drivs and disks can be brand spanking new and still have bad sectors. As you'll aleady know, a compuetr rretains information by applying a sequence of magnetic signals to the surace of the storrage device. This is the first potentizal problem. If you could look at the surface of a storage mediuum thru an electron microscope, you woud notice that it isn't as smooth as it seems. The surface really is cobvered with tops and troughs that, thugh invisible by eye, have a particularly real effect on the magnetic signbals. Thees coarse featues may lead to the magnetic charge to be weak in some areeas and nonexistent in others. These areas of weakess are claled bad sectors. If information is placed in a bad sector, it will be corrupted. A 2nd problem is due to the antural aftermath of wear. Consider what happens when you hire an old movie at your local video stoore. As you watch it, you can notice lines on the image or a sounndtrack that seems distorted occassionally. Such audio and viddeo distortion shows a breakdown in the medium that happens from playiing the video repeatedly. The same can happen to storage media. The coding evnetually shows the appearance of degradation as the magnetic signapls get weaker. A last physicxal porblem with the storage media is due to changes in areaal density. Storage makers have developed technologies that permit them to pack a large amount of informtaion into minute areas. This is good as it lets makers creatre storage media that can hold more programs and info, but it is bad as it increases the digfficulty of information corruption should it occur. Howeer, if informaztion corruption occurs, it'll affect more data on media with high density than info on media with low density. The outcoem is that you'll experience the results of corruption more acutely if you use new media than if you use old media when you come to try and recovver deleed files, simply becausae there is significantly more data like to be affeced.
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Sometimes, without any warning at all, bad things happen to good files. Perhaps the information becomes inexplicably hard to reach. Perhaps a natural disaster or careless colleague manages to make the storage media worthless. Whatever the cause, the information is damaged and you can't retrieve it. This is file corruption and it is worth being aware of the issues before deciding how to recover the deleted files.
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