After such kind of detection, the company which you have approached will give you a report which will communicate whatever the procedure and the report will also have an approval form which need to be signed by the user and unless and until the user won't sign, the procedure won't be applied and it won't be kept in the job queue and the data will be retrieved in the manner it was received. Is you doubt so, shut down the computer immediately .If the problem is physical or external, don't execute over the drive as it may damage the head component or stack of the hard drive which will cause more complications Recovery after corruption Whenever you have reformatted the hard drive accidentally don't try to write anything new into the hard drive, because the files that you have erased are still inherent within the computer somewhere. Apart from it, the data amount that has to be retrieved along with the steps needed and price of the service will be given .Thus these firms deliver some quotations to do the hard drive recovery. Just after the evaluation along with estimation done, the next step is approval to continue with the actual data recovery of external drive. There are people who rush to get a new hard drive whenever their old hard drive shows complaint. This should not be followed, as there are number of ways to recover the hard drive and there are even specialists to help you out. Some of them may even show their own hands on experience over the hard drive recovery process, which may always result in blunders and they don't exactly understand what they are doing . Another important part to note is that though the circuitry board develops errors which attacks the operations of the hard disk, recovery of hard drive is still possible .You need to know the fact that before deal with any hard disk drive recovery process, if there are peculiar noises or no noise the reason for its failure may be considered as mechanical. FAT stands for File Allocation Table which has copy write rights and its developed by people of Microsoft in place of MS-DOS and considered as the prime file system for users of Microsoft Windows Me and Windows Up.Moreover FAT is used in floppy drives as its format is simple. Like any other file system FAT also has its own disadvantage when it comes to crashing.