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  1. #1

    Member Since
    Mar 25, 2009
    Disk utility won't recognize my HD
    Hi all,
    I installed a new Hitachi 500GB travelstar drive and restored it with all my data. Everything was working fine until I updated the EFI firmware to 1.7. After doing this, my MacBook pro won't even recognize the drive in disk utility. I even tried the old drive, and that didn't show up either. However, when I plugged the drive into a sata to USB connector, it would boot fine. Is there any way to fix this?
    I have a unibody MacBook pro (5,5)
    Thanks for any help, this whole process has been a nightmare!

  2. #2

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    iMac i5 2.7GHz, 16GB memory, OS 10.11.1.
    G'ay and welcome to the forums.

    Lots of problems with this update and so called 'unsupported' drives.

    MacBook Pro EFI 1.7 Firmware Update Causing New HDD Issues; Make An SD Card Startup Disk For New MacBook Pro; Mac mini Uses MacBook Components; MacBook Pro Upgrade Project; Triple Mac Laptop Wireless Networking Range; Alto Cordless Laptop Stand /Keyb

    Take note of Apple's warning on unsupported drives. By chance do you have a Time machine or cloned backup on external drive in case you need to erase the hard drive?

    Otherwise you may be able to follow the guide in the second post in this thread and remove the update:-
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

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