In data recovery training, we have learned about the basics of hard drive and data recovery. We have also learned about the physical and logical level problems of hard disk data recovery, The troubleshooting of such problems, and the solution of them.

In this session, we will discuss about the recovery at the firmware level. So, let us first understand what firmware is, what is the work of firmware and where it is located in the hard disk, and the boot sequence of the hard disc, and learn about how a hard disk works before the loading of system boot.