Replacing Hard Drive 27" 2009 iMac

Discussion in 'iMac' started by chostwales, Aug 28, 2014.

  1. chostwales macrumors member

    Jul 10, 2008
    Hi All,

    As the subject suggests, we have an iMac 27" (2009 spec)

    We wish to replace the hard drive to something like an SSD. Is it possible to do this? i.e how do we access the hard drive compartment?

    Any links to youtube videos or tutorials would be of great assistance.

    Kind Regards,
  2. DeltaMac macrumors G3


    Jul 30, 2003
  3. toddzrx macrumors 6502a


    Nov 20, 2012
  4. eduardrw macrumors 6502

    May 20, 2013
    Just make sure you research the Temperature sensor issue before you do it.
    Starting with 2009 Apple replaced the external temp sensor (attached to the HDD with sticky tape) with an internal sensor in the HDD.

    If you replace the disk with a non compatible one your fan's will speed up to maximum rpm.

    - get compatible disk (OWC seams to know more about it - give them a call)
    - Replace internal DVD drive with SSD (OWC data doubler) + leave HDD as is
    - Get an external Temp sensor from OWC and plug it in the motherboard.
    - Use software to override spinning fans.

    Disk or SSD only needs to be 3G or SATA 2 - because your iMac only supports that speed.
    Some Sata 3 SSD's give problems with Sata 2 iMac's.

Share This Page