The other reason that I asked this question is because I have an old computer maybe about 8 years old.Well when I booted it up and was opening and closing windows I heard something in the computer go "hurmmm",which sound like real low humming noices. So my first thought was humm this things gonna die but I am pretty sure that it will soon who knows when though. So there isn't an actual time set as to how long a hard drive would last ? Now would it be possible for a hard drive to last 100 years ?