The,Hard,Disk,Crashed,What,hap computer The Hard Disk Crashed! What happened exactly? Can data be re
----------------------------------------------------------Permission is granted for the below article to forward,reprint, distribute, use for ezine, newsletter, website,offer as free bonus or part of a product for sale as longas no changes a Gone are those times when the companies and the organisations didn't need a hi-tech system to handle them. Owing to the considerable increase in the business sector and thus, an enormous increase in the complexity of the organisational struc
We have all heard of cases, and unfortunately many of us hadto live through one as well; a hard disk crash on a computer. Its your worstnightmare. Even though disks are remarkably reliable, any electro-mechanicaldevice will eventually suffer from the demand placed upon it and go wrong. Weare used to hearing the term crash, but where does it comes from and is thereany chance on recovering your data?A hard disk crash is normally the term given for the failurein which the read/write head touches the surface of the platter. The hard diskconsists of a platter on which the data is stored. This is rotating with areading head floating a microscopic distance above the platter. Imagine whathappens when this head crashes down on the platter. Nearly always there isdamage to the head and the coating of the platter will be stripped away. Thisis what happens when your hard disk crashes. However, there are many morehard disk failures that are commonly given the name hard disk crash. Alignment Failure and Head Failure.The read head of the hard disk is positioned at such amicroscopically precise position in order to read the data. If any head sufferspositional problems as the result of mechanical wear, it will no longer be ableto read the magnetic signals. The disk will fail, but as long as the platter isnot damaged, it is very likely that a specialist can recover the data for you. Media Failure. All hard disks suffer failures during writing at some time.Normally this is not a problem. Modern disks use spare sectors, which areused as a substitute when a failure occurs in a certain sector during writing.The disk will map out the bad sector and use the spare sector in its place.You will not notice anything at all as a user. However, after the number offailed sectors on the disk grows and the number of spare sectors decreases, youwill start to see error messages being reported . Chances are that badsectors will appear in the most used parts of the disk and result in problemswith accessing the file system. Even though the files are there, you no longercan access the data. The chances of data recovery are actually quite high, ifthe work is done by professionals. Bearing Seizure.Within the hard disk is a set of bearings that help theplatter rotate smoothly at 10,000 rpm. A first sign of bearing failure can bethat the disk becomes noisy. With a complete failure, the disk will stoprotating and will no longer operate. Memory Failure. When a disk is turned on, it will first load vitaloperational data into on-board memory. Any failure of the on-board memorydevices can result in a disk failure, while your data might still be fullyrecoverable. Data Failures. These kinds of failures are often wrongly blamed on thedisk, but usually due to some failure of the computer system or operatingsystem. Information has become corrupted and sections of the file system can nolonger be accessed. Data recoveryspecialists are often able to recover data from disks that havesuffered any of the above failures and success rates are very high. However, itcan be very complex work in which case the costs might be quite high. In severecases some data is lost forever, do not expect the specialist to be successfulwith datarecovery from a surface that has been stripped by a real head crash.It is vital to have adequate backups, because failures do and will happen.Every a hard disk will eventually age and show signs of mechanical wear.Windows XP comes with a backup utility and a wizard that makes the wholeprocess easy, Linux also provides a range or backup applications. It has been said that there are two types of disks, a failedone and one that has not failed yet. So, do not forget to backup regularly tohave the most current data safely stored away.
The,Hard,Disk,Crashed,What,hap