Enclosure Not Recognizing HD

Discussion in 'iMac' started by meyer0095, Jan 20, 2011.

  1. meyer0095 macrumors newbie

    Dec 25, 2008
    I am trying to recover a iMac HD.

    It seems to be running (the HD), but it won't be recognized on my computer. My computer isn't even recognizing that something is plugged in. (Checking USB info in About this Mac).

    Could it potentially be a USB connection issue? It seems to be plugged in alright. Or could the HD just be the issue...

  2. Miker2k macrumors regular

    Feb 2, 2009
    Is the drive spinning up at all? Any strange noises or noise at all?
  3. Fishrrman macrumors G5


    Feb 20, 2009
    "I am trying to recover a iMac HD.
    It seems to be running (the HD), but it won't be recognized on my computer"

    I assume that the drive in question has been removed from the iMac and put into an external case, is this correct? You're not very clear in your original post.

    Diagnostics can be difficult when you've got the drive "entombed" in a case like that.

    Is the drive in question ATA/IDE, or is it SATA?

    If it's a SATA drive, I think you'd do better to get one of these:

    ... and then try to do the diagnostics and recovery on the "bare" drive in the dock.

    Doing it this way makes it easy to separate "drive problems" from "enclosure problems".

    As Miker2k said, the first thing to determine is if the drive is physically "spinning up" when you connect it (again, the "dock" makes such things easy).

    Of course, if it doesn't spin -- dead drive.

    If it does spin, next use Disk Utility to check if DU can "see the presence" of the drive on the USB bus. Does it?

    If the drive is "seen", but won't mount on the desktop, could be directory problems.

    DU can fix _some_ directory problems.

    If DU can't fix it, there is DiskWarrior, which can repair directory problems that DU can't.

    But it may go beyond that, to where you have to give up on trying to "repair" the drive's directory, and look instead to "data recovery" ("recovery" as distinguished from "repair") applications.

    Of these, Data Rescue and Stellar Phoenix Data Recovery are two with good reputations.

    However, there is a newcomer to the data recovery scene and I would suggest you give it a try first:
    For a time, the program is still "in beta" -- but if it works, there is no "upcharge" (as you have to pay for recovery with DR and SPDR).
    It's worth a try....
  4. Miker2k macrumors regular

    Feb 2, 2009

    Depending on the nature of the external housing it could be a defective power supply. I have a 1TB external Lacie that I Was convinced had died but it was the external power brick....

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