Just installed New WD320 GB hdd - Partition CLone problems?

Discussion in 'MacBook Pro' started by pbeaugrand, Jun 5, 2008.

  1. merl1n macrumors 65816


    Mar 30, 2008
    New Jersey, USA
    Question: When you installed the WD drive, did you reformat it before transferring files?

    The reason is that most manufacturers pre-format their drives for a PC and the Partition mapping scheme is usually "Master Boot Record". This is not good for MacOS running on Intel. This may be why you are having problems with SuperDuper as the partition maps differ between your two physical drives.

    The drive should have a partition map of GUID before you start.

    What I would do is this:

    Boot off the old drive (in the external enclosure).
    Run Disk Utility.
    Select the new drive device (not the volumes beneath it) and go to the Partition tab.
    Change "Current" to "1 Partition" (this will enable the "options" button).
    Click options button and select the GUID partition mapping. Click OK
    Name the disk (no spaces in the name) and click Apply.

    The disk will reformat now with the correct partition mapping.

    Now use SuperDuper and clone the old drive to the new drive.

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