Linux hard drive recovery refers to the attempt to retrieve missing, deleted, or inaccessible data from a hard drive running on Linux operating system. The type of recovery to use will depend on the cause of data loss. Some causes may include accidental deletion, formatting, corruption of the file system, or any problem with the disk. Before attempting recovery, one should ensure that no new data gets saved to the hard disk. Linux users can employ recovery tools to help scan the hard drive for available data. In case there is any physical damage to the hard drive or it emits strange sounds, then one should consider hiring professionals for recovery.