If you have the question how to recover you hard disc ?
Q:Firstly you have to know What is Data Recover ?
A:It is a process of making or restore previously lost or damaged data.
QHow to Recover data from data stored on damaged media or corrupt storage device, such as hard disc?
You can do it by a software is used Disk recovery program which analyze & examines hard disk drive and recover & restores the data back.
What is the file systems where it is applicable?
# FAT, NTFS, Ext2, Ext3, NWFS, NSS, HFS & HFS+ etc.
In what Situation it can be data can be recovered?
#Hard Disk Drive Crash , Water Damaged , Fire / Heat / Smoke Damag, Software Failure & corruption, Power Outage, Electrical shortage, Virus Damage & Repair
NOTE: No technical skill is required. You have to buy a good data recovery software and use it...