Help me find a compatible hard drive for an iMac late 2009 model

Discussion in 'iMac' started by PacificRimJob, Mar 13, 2013.

  1. PacificRimJob macrumors newbie

    Aug 30, 2012
    Can someone please help me find a replacement hard drive that will work with the late 2009 iMac thermal sensor cable? I have tried the Seagate ST500DM002 and this causes the fan to spin constantly. Any ideas? Looking for a 500GB drive if possible.
  2. Psilocybin macrumors 6502a


    Jan 16, 2011
    Ontario, Canada
    From what I recall I think it's a procedure not the drive. I could be wrong
  3. PacificRimJob thread starter macrumors newbie

    Aug 30, 2012
    I don't quite get what you mean. There's some special procedure to re-install the hard drive? I know the thermal cable can fit in two ways and I made sure and tried both ways and it still spins 100% of the time.
  4. Raima macrumors 6502

    Jan 21, 2010
    Short the cable. That's what I did when I replaced the hard drive. Problem solved.
  5. someoldguy macrumors 68000

    Aug 2, 2009
    For a few years ,Apple used software embedded in the HDD to control fan speed IIRC starting in 2009 .Don't know if the 2013's still use it . Using a non Apple HDD results in runaway fan speed as the control software isn't there .Shorting the cable might only disable the HDD fan . Download a copy of SSD FAN CONTROL
    ( from here : )
    this is a software patch designed to monitor HDD temperature via a non-Appple HDD's SMART circuitry , install it and run it in SMART mode . Worked like a charm on my 2010 21.5" . Doesn't cost anything , though they take donations .
  6. Giuly macrumors 68040


  7. MatthewAMEL macrumors 6502


    Oct 23, 2007
    Orlando, FL
    There are no retail drives that will work with the HDD Temp Cable. It's a custom firmware from Apple.

    3 Solutions I know of:

    1. Install HDD Fan Control (I used this before I found the Optical Cable)
    2. Short the HDD Temp Cable
    3. Swap out the HDD Temp Cable with an Optical Temp Cable (this is what I did with my 2TB WD Black FASS drive) 922-9229 Optical Temp Sensor Cable - 27 inch Core2Duo - Intel i5 - i7 iMac Late 2009 A1312

    BTW- the optical temp cable also works with Boot Camp. If you use ANY software HDD control, you must set a static fan speed before you boot into Windows.

    Good luck!
  8. someoldguy macrumors 68000

    Aug 2, 2009
    Thanks for the reminder re: booting into Windows . Forgot to mention it as I'm running Windows via VMWare which negates the necessity for a static fan speed

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