Sunday, May 8, 2011

Damaged Hard Drive and Bad Sectors

Bad sectors are disk sectors for which data could not be read / written. This may be due to several reasons, but for your operating system, what is important is that the disk can no longer be used. If the disk has not been used, or has been reformatted, bad sector is not really an issue. All the latest operating system will map out bad sectors and avoid them while formatting the drive to use.

Modern hard drives are made with spare sectors that are only used to replace a damaged hard disk space that is bad sectors. This allows the drive to automatically compensate for any manufacturing defects that may have resulted in bad sectors drive when out of the factory. If in the process of formatting the drive, bad sector is detected, the sector this reserve is used to replace them as necessary.

Whenever a problem is bad sectors that were previously used when the sector becomes corrupted because of disk errors. All data on these sectors are threatened damaged or destroyed. The operating system has no way to automatically compensate for this loss. The tip of this problem can potentially cause data corruption on a larger scale and also the instability of the affected system if the data is very important that the file system.

Bad sectors can also be caused by faulty software, or a small error in the head read / write which causes data written on a particular sector that will truly unreadable, and thus appear as bad news for the operating system. Types of 'soft' bad sectors in general can be repaired by removing and then start writing again (to re-install software).

Bad sectors caused by mechanical fault has a tendency to multiply faster so Bad sectors become increasingly rapidly. Because the margin to work on the disk are very slim, surface damage or waste created by a mechanical failure or "head-crash" quickly will cause more damage because they interfere with the head in a read / write.

When you format a drive with the 'hard' bad sectors such as this, will use an empty sector as much as possible to replace the existing Bad sectors as described above. Of course, if the bad sector is still spreading because of loose surface particles or error in the disk, the disk will still be stable. At this point, the only option is to save as much as possible data from the drive before actually dying.

Signs of Hard Disk Damage

Although you may be able to fix software errors caused by bad sectors, and in some cases you may be able to fix bad sectors alone, if your hard drive has begun to fail mechanically. The most basic is to detect signs of failure of your drives before data is lost. Let's look at some common warning signs of hard drive failure below:
  1. Frequent but irregular crashes, especially when booting up Windows.
  2. Error messages are often vague and when to do special activities such as transferring a file.
  3. Folder and file names to be scrambled and changed.
  4. Loss of files and folders.
  5. Wait very long to access the folders and files.
  6. Hard disks do not react for a long time after you request data by opening files or folders.
  7. Chaotic output from print or open the file.
  8. Appears sound (sort of ringing) is very noisy in the Hard drive.
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1 comment:

  1. bulan kemarin hardisk saya juga terkena badsector, saya repairs saja (karena tak punya uang untuk beli baru) selama hampir 24 jam..capek banget