Mac hard drive is a part of Mac system which is used also for storing data in sectors. If your data is saved in hard drive then do not think that you are always secured. Data may be lost out of many causes. You save your precious documents and then find that after a while, it is not present in the saved location. What is this? This is nothing but the situation of data loss. If hard drive is corrupted then it makes the Mac user unable to access data. Hard drive may be corrupted because of many reasons. If Mac file system or drive is misused for wrong operations then it originates the case of Mac hard drive corruption. If resizing of the drive is performed carelessly due to lack of technical knowledge then data loss case takes place. On re-partitioning, expansion and shrinking makes it impossible to access the data. Further bad sector of Mac hard drive may make the file corrupted. Its good to deal with the reasons of Mac hard drive failure, but one thing remains undiscussed, that is about recovery related to Mac hard drive corruption. Taking back up is one alternative where Mac hard drive data may be recovered by restoration of data. Final option to be chosen is Mac data recovery software which retrieves the data lost after Mac hard drive corruption.