Hard drive recovery procedures are delicate, because they involve a high degree of risk to lose your data permanently. This is why it is not recommended that less experienced people try to retrieve their data using data recovery tools such as software or utilities. If undelete is enough to get your files back, then you can safely use it, even if you’ve just started with computers. If not, think twice before running any program you may have downloaded from the web, even if you paid for it. It is much safer for your data to make use of professional hard drive data recovery services, thus extracting data from your crashed hard drive for future use.
Why Shouldn’t You Attempt Data Recovery
Logical hard drive recovery implies several procedures which are done with the help of a special software. If your files are gone because of a drive failure, the software cannot be run from the same disk, so you need a second one links to the faulty drive. Then the file system is scanned, the errors are found and repaired. In case this fails, there is a more detailed procedure called low-level scan, which takes and searches each and every sector of your drive, attempting to retrieve the corrupted or lost files.
Physical hard drive recovery is required when you lost your files because you dropped your hard drive on the floor, or it was subject to floods or fire, or any other type of physical damage. This recovery can be done either mechanically or electronically. Usually, you need another hard drive, identical with yours (brand, storage capacity, printed circuit board), as you are going to use parts of it to put together your original drive again.
Briefly, such operations require a dust-free environment, and this is why you cannot do them at home. Data recovery companies use minimum Class 100 Clean Rooms to restore defective drives and recover the data.