8 Replies Latest reply: Dec 9, 2008 6:21 AM by Len D
Ed Dunn Level 1 (0 points)
I just got my new 320GB 2.5" Hitachi Travelstar 7K320 7200RPM SATA Notebook Drive with 16MB Cache from OWC and found it is not recognized when I try to install the OS from the optical disk.

I took it back out and examined it and found that it does not have all of the pins the original has. It is lacking the set on the far left (when viewed from the top, with pins up). Being an SATA, it seems that it should be configured as a standard? Has anyone else had this problem?


MacPro, MacBook, Mac OS X (10.5.4)
  • Kappy Level 10 (265,676 points)
    Did you prep the drive?

    Extended Hard Drive Preparation

    1. Open Disk Utility in your Utilities folder. If you need to reformat your startup volume, then you must boot from your OS X Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger or Leopard.)

    2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.

    3. Click on the Options button, set the partition scheme to GUID (only required for Intel Macs) then click on the OK button. Set the number of partitions from the dropdown menu (use 1 partition unless you wish to make more.) Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the volume(s) mount on the Desktop.

    4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.

    5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.

    6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.

    Steps 4-6 are optional but should be used on a drive that has never been formatted before, if the format type is not Mac OS Extended, if the partition scheme has been changed, or if a different operating system (not OS X) has been installed on the drive.
  • Cocky Rooster Level 1 (0 points)
    Any luck?

    I am having the same problem with my gf's macbook. I replaced the crashed hard drive with a 120 Hitachi, but it wont recognize it. I've tried every combination of keys on start-up, and have installed/reinstalled a few times. I keep finding one of the new pins bent over when I pull the unit out, and I've tried many times to gently align the unit in as many ways as possible.
  • Kappy Level 10 (265,676 points)
    Did you read my reply and follow the directions to prep the drive?
  • Cocky Rooster Level 1 (0 points)
    Yep. I go to disk utility and it will show DVD drive with the install disk, but there is no sign of the hard drive to select for formatting.
  • Kappy Level 10 (265,676 points)
    Bent pins are not good. Call Hitachi tech support to see if there's anything you may need to do to get the drive recognized. I have installed their 7K200 model in my MBP without any problems.
  • LewInVT Level 1 (5 points)
    Are you aware the Travelstar 7K320 is available with two interfaces? They are SATA 1.5Gb/s and SATA 3Gb/s.

    I know the original Hitachi HTS541616J9SA00 drive in my MBP has a 1.5Gb/s interface and would need that same interface on a replacement drive.

  • ali.k Level 1 (0 points)
    hmmm, does that mean that this would not work for me?: http://eshop.macsales.com/item/Hitachi/DIY0A57547F8/

    i have the macbook pro late 2008 with a 320GB 5400 rpm in it
  • Len D Level 4 (1,000 points)
    The MacBook can handle either 1.5 or 3 GB/s interface. The 7K320 should work fine, I used to have one.