External Hard Drive won't format

Discussion in 'Mac Pro' started by peejack, Jan 8, 2009.

  1. peejack macrumors 6502a

    Aug 7, 2007
    Hi guys, I wonder if anyone can help.

    I just brought a Western Digital 1TB USB drive for my Mac Pro. Now when I try and format it in Mac OSX journaled it keeps coming up in an error saying it can't be done, It will format as FAT32 but I need it to be Mac OSX formatted. Does anyone know what might be wrong?

    here is a picture of the error:


    Many thanks in advance.
  2. Cave Man macrumors 604

    Cave Man

    Feb 12, 2007
    Neander Valley, Germany; just outside Duesseldorf
    You need to click on the drive (and not the partition, which is below and indented) in Disk Utility. That brings up the Partition tab. Click on that to proceed. If this will be a bootable drive on an Intel Mac, be sure to set to GUID partition table with the Options button.
  3. peejack thread starter macrumors 6502a

    Aug 7, 2007
    Fantastic mate, thanks so much :) It worked. Needed to select GUID :)

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