Fixing an external hard drive that won't mount?

Discussion in 'Mac Basics and Help' started by slazareth, Aug 15, 2014.

  1. slazareth macrumors regular

    Feb 5, 2006
    I have an external harddrive that may or may not be dead. I tried using Disk Warrior but it says that the disk has a hardware failure. So then I tried Data Recovery and it was able to pull all of my files off of the hard drive. This gives me hope that I can somehow recover the drive and use it again as I think a computer with bad ram messed up the drive while trying to copy files. Any recommendations on apps that can recover this drive? I don't need the data, just need to get it mounting again so I can reformat it or whatever. Any help is much appreciated. Thanks!
  2. satcomer macrumors 603


    Feb 19, 2008
    The Finger Lakes Region
    If Disk warrior can't fix it then it may have a dire hardware problem. Time to get a newer external.

    IMHO you should look at externals that you have to add a drive to it. This way if in the future if that drive fails you can replace that internal drive easily.
  3. Fishrrman macrumors P6


    Feb 20, 2009
    To the OP:

    You have copied all the data that you want to save, from the "bad" drive to another drive, is that correct?

    If that's the case, why don't you just re-initialize the "bad" drive using Disk Utility?

    What happens then?

    Does it re-initialize ok?
    Or -- does something else happen?

    IF you get a good re-initialization, I suggest you run Disk Utility's "repair disk" function on the drive. What does it indicate?

    If DU gives you a good report (no problems found), I suggest you REPEAT the repair disk function at least five times in succession.

    IF you get a good report each and every time, I would consider the drive "re-usable", at least for non-critical storage, or for things that are also backed up somewhere else.

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