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How do you turn off/spin down an iMac's internal hard drive?

1942 Views 27 Replies Latest reply: Oct 30, 2012 1:24 PM by motrek RSS
  • RRFS Level 5 Level 5 (4,425 points)

    sorry, haven't got any other ideas

  • baltwo Level 9 Level 9 (59,150 points)

    motrek wrote:

    My iMac is about a year old and the internal hard drive makes an annoying high-pitched whine that's pretty normal for older drives.

     

    Interesting. The Seagate in my iMac (late '09) is quiet as a mouse. I can't hear reads or writes. Do note that that goes for the Seagate 1 TB HD, model ST31000528ASQ, revision AP24 that failed in April and the replacement model ST31000528AS revision AP2E. If yours is a 1 TB Seagate, I suggest that give AppleCare a call and see what they can do for you.

    27" i7 iMac SL, Lion, OS X Mountain Lion (10.8.2), G4 450 MP w/Leopard, 9.2.2
  • baltwo Level 9 Level 9 (59,150 points)

    I realize that you say it's not covered, but if it's one of the original Seagates, you might have a case and might be able to get it attended to. Your choice whether or not you pursue the matter. I have normal hearing, usually 0-15 dB across the tested spectrum of 500-6000 db. I'm in my early 70s but have no hearing issues. Late at night in my home, the only place I compute, I only hear the G4's fans (very low and unobtrusive air rush) and nothing from the iMac. Run the pmset script as a login hook and that should take care of your problem. 

    27" i7 iMac SL, Lion, OS X Mountain Lion (10.8.2), G4 450 MP w/Leopard, 9.2.2
  • Jeff Shenk Level 4 Level 4 (2,000 points)

    Not to question the fact that you hear a highpitched whine, but you do realize that a 7200 rpm disc is spinning at 120 Hz?

  • RRFS Level 5 Level 5 (4,425 points)

    Have you considered having the SSD installed where you would get the performance you paid for? As a USB drive its response won't even equal a very slow internal SATA, Seems a shame to have it hooked up and not even as a FireWire drive.

  • MichelPM Level 5 Level 5 (7,125 points)

    That's what I was trying to tell the OP. My drive in my 2009 iMac is pretty quiet with no high pitch whine.

    Despite no weird sounds or SMART errors, my drive has been flagged for replacement.

    The drive is still working fine.

    There is a problem there with the OP's drive despite what the OP says or writes.

  • MichelPM Level 5 Level 5 (7,125 points)

    I Am thinking the reason the internal drive is still running is that Spotlight is still trying to index or search that drive.

    As another poster pointed out, you need to disable the drive from indexing in Spotlight's Preferences.

    Maybe this would keep the drive from spinning up?

    Not Sure.

  • JShimazaki Level 2 Level 2 (355 points)

    Motrek, if you no longer want to use the internal drive anymore why don't you open up your iMac and remove it and replace it with your SSD.

  • baltwo Level 9 Level 9 (59,150 points)

    MichelPM wrote:

    Despite no weird sounds or SMART errors, my drive has been flagged for replacement. The drive is still working fine.

    The recall is for all of those, whether or not they're failing. Mine went in April and apparently they and Seagate identified the flaw causing the failures. So, the recall allows for a new one and ample time to prepare for restoring your current setup. I had eleven volumes on mine and restorable clones (also backed up), so restoration was a simple matter of formatting the new one and restoring. BTW, it was replaced onsite under AppleCare.

    27" i7 iMac SL, Lion, OS X Mountain Lion (10.8.2), G4 450 MP w/Leopard, 9.2.2
  • RRFS Level 5 Level 5 (4,425 points)

    Actually I have had my SSD in All 3 configurations while I was formatting it and transferring files around to get the setup how I wanted it. My internal regular HD booted in about a minute and 20 seconds, In fireWire 800 mode SSD booted in just under a minute, in USB mode SSD took well over 2 minutes and installed SSD takes 25 seconds. Not sure how you are making comparisons, mine were with a stop watch and the actual setup.

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