Hard drives can fail for a variety of reasons. Some of the most common include exposure to excessive heat or moisture, electrical power surges, faulty firmware, and mechanical errors. A hard drive can also fail due to a corrupted file system which can result from a malware or virus attack.
There is no cost to recover data from a hard drive if you are using your own backups. Data recovery software is often required to successfully restore the disk and can be obtained at various prices. Tools like Disk Drill offer Windows users the ability to recover 500MB of data for free.
Data recovery software takes advantage of the methods that modern operating systems use to delete data. They logically remove access to the data but leave it physically intact until it is overwritten. This fact allows the recovery application to scan a disk and restore access to the deleted data.
The broken hard drive must be readable in order to recover its data. If it cannot be read you can’t use data recovery software to restore your lost data. In cases where you cannot achieve access to the drive, you may be forced to send it to a professional hardware recovery service.
You will know if your hard drive has crashed or is about to crash if: