Hello, thanks for your tutorial.

I wonder, when facing this kind of problem (drive not recognized), i have read somewhere else that you could just change the PCB board and be fine with it. Do you always have to transfer bios or is it just for some special cases like this one?

Hello, your tutorial is very nice. I want to learn how to fix harddrive, and every kind of trouble they can encounter. I wish to know what are the compatibilities between parts, what logic board and heads can be swaped, etc... Do you know where i could learn more about all this stuff?