To be honest, theres no specific answer to such kind of question.
First of all, you should determine which jot down of damage this hard drive is suffering from.
Well, how can yourecover USB mass storage unit?
If your answer is positive, I can help you with that.
There are 4 steps to recover data from a CD/DVD.
You should wait patiently for the completion of optical drive data recovery.
Then, Ill tell you how to define a good magnetic disk by looking at 4 main parameters.
In fact, these parameters form the actual Address to access disk memory.
One: recording density.
Recording density is also known as storage density and it is usually represented by track density plus bit density.
Two: storage capacity.
Three: addressing time.
Four: data transfer rate.
Magnetic disks are divided into hard disk and floppy disk according to differentstorage media.
Being made of reflective material, the optical disk often stores data through making some changes on the surface.
When the optical disk is rotating, the laser beam will irradiate the reflective surface with information stored on.
In this way, data can be recognized and read according to changes in the strength of reflected light.
Once information is written into a CD-WORM, it will be kept there permanently until the disk is broken.
The data writing and reading principle varies with the different materials used to make disk.
