Different Partitions

Discussion in 'macOS' started by MHardee, May 22, 2010.

  1. MHardee macrumors newbie

    Feb 18, 2008
    Have a G5 Imac, Intel Macbook and a 1.5 TB external drive for backups. I created 3 partitions on the external for backups for both computers and the extra partition for storage of some rips.. Is it possible to partition the external so that the Imac partition (HFS+?) is bootable and the Macbook partition (GUID) is bootable?

    Thanks for any advice..
  2. Hellhammer Moderator


    Staff Member

    Dec 10, 2008
    They both use HFS+ format and map model (or what is it) of GUID. You need CCC to make bootable clones
  3. MHardee thread starter macrumors newbie

    Feb 18, 2008
    Thanks.. I am using CCC - but the G5 backups claims it will not be bootable while the Macbook backup is. In disk utility I see no way to have different partition "types"... Maybe I'm just "thick"... ?
  4. plinden macrumors 68040


    Apr 8, 2004
    PPC bootable drives have to be formatted with the Apple Partition Table (APT) and Intel drives with GUID.

    I have heard, but have no experience of it, that APT partitions will boot Intel machines.

    But you can't install OS X from an Intel Mac on an APT partition, or install it from a PPC Mac onto a GUID partition, ie no CCC from an Intel Mac onto a APT partition or CCC from a PPC Mac onto a GUID partition.

    You set the options when partitioning the drive (Partition -> Options). This is grayed out on if you're adding a partition to a drive already in use. It's only available if you're partitioning the drive from scratch.

    Edit: I don't think you can have separate APT and GUID partitions on one drive, since it's the Partition Map you're selecting, but since I have only Intel Macs, I've never tried.

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