advancedata wrote:
Hard drive failures can be anything from components attached within to software malfunctions & corruptions. So if your Mac shuts down without you requesting that do so, begins reporting a whole host of disk errors then shut the computer down and contact Apple Hard Drive Recovery agents. They will diagnose the nature of the problem from the information you give them & can help you move forward with the recovery of your data.
Firstly advancedata welcome to the forum.
Secondly were you aware that the post you replied to is over 4 years old?
Loki