In hard disk drives, firmware is the software code that controls, and is embedded in, the physical hard drive hardware.
Hard drive firmware is typically found on a flash memory chip on the hard drive PCB. Often the firmware will need to access various drive unique parameters from the hard disk platter surface during operation to ensure the correct functioning of the hard drive at all times.
The firmware controls all aspects of the internal hard drive operation -
When a hard drive is powered on, it is the firmware that is responsible for correctly configuring the hard drive and putting it in a ready state that will then allow the host PC to load the Operating System.
During the operation of the hard drive it is the firmware that ensures the correct operation of the hard drive, allowing it to correctly interact with other components on the system (eg. the operating system)
When the hard drive is powered down, a shutdown sequence is executed by the firmware that ensures the hard drive powers down correctly so that it will operate successfully the next time it is powered on.
So download the firmware of the harddisk.Or contact to vendor