Mid 2009 Model A1278 / 2.26 or 2.53 GHz Core 2 Duo processor EMC 2326

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hdd not recognised

I replaced my Hard drive and I order a new ribbon cable... still not seeing hard drive

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Kirk - You really should create your own question with all of your details.

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You might have a new 6GB/s HD that is not automagically detecting your 3GB/s SATA II connection - the other step is to format the HD so that you can install to it. You use Utilities->Tools->Disk Tools to format the drive to GUID partition...

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Also make sure your EFI is up to date EFI & SMC firmware updates for Intel-based Macs

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kirk will be eternally grateful.
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