complete hard disk data recovery

[sikhilekanna]

hi i am basic data recovery technician .. means corrupted, formatted memory cards, hdd's to recover data. ok. now i want to learn complete hard disk recover ( clicking, buzzing, not detected hdd, pcb not working) . in my area i don't have to enough sources. please help.

 

[sikhilekanna]

MERGED QUESTION
Question from sikhilekanna : "which hardware tools needs data recovery"

hi .which are hardware tools needs in data recovery technician . HDD'S, memory cards, IPHONE's , ANDROID phones.