Creating small partitions with Disk Utility (or not) on 2012 iMac

Discussion in 'iMac' started by The Phazer, Mar 25, 2013.

  1. macrumors 68030

    Joined:
    Oct 31, 2007
    Location:
    London, UK
    #1
    Has anyone else tried to create a small partition on a Fusion Drive on a 2012 Mac?

    Disk Utility greys out the box to set my own file size, only allowing me to drag the graphic to set the size of the new partitions. This results in the smallest partition allowed of 67GB. Post paritioning, it actually achieves a partition of 120+ Gigs.

    That's crazy. I only need it to hold 100MB of files.

    Is everyone else finding the same thing? Anyone got any suggestions or has anyone found a third party tool that non-destructively allows you to create a partition on a Fusion Drive?
     
  2. macrumors 603

    justperry

    #2
    There is no third party App which you can use, Apple is for now the only one which can partition the drive without loosing data.(non destructive)
     
  3. macrumors 68020

    Joined:
    Jun 15, 2012
    #3
    Can I ask why you want to create a small partition?
     
  4. thread starter macrumors 68030

    Joined:
    Oct 31, 2007
    Location:
    London, UK
  5. hfg
    macrumors 68030

    hfg

    Joined:
    Dec 1, 2006
    Location:
    Cedar Rapids, IA. USA
    #5
    If you read further down on that same thread, there is an alternate method of installing Windows to an external drive which does not require any modifications to your OS X drive (Fusion or not).

    See post #47 there.
     
  6. thread starter macrumors 68030

    Joined:
    Oct 31, 2007
    Location:
    London, UK
    #6
    I don't have access to an existing 64 bit Windows machine in order to do it, sadly.
     
  7. thread starter macrumors 68030

    Joined:
    Oct 31, 2007
    Location:
    London, UK
    #7
    Actually, having thought about it a bit more... Could I use that method by creating a normal boot camp installation with an unactivated 64 bit copy of Windows (the evaluation copy would presumably work) on the hard drive and just vape it after getting Windows 8 on the SSD?

    I actually have managed to use terminal commands to create the small partition now, but it still seems to have sacrificed far more HD space that it should have done.
     
  8. hfg
    macrumors 68030

    hfg

    Joined:
    Dec 1, 2006
    Location:
    Cedar Rapids, IA. USA
    #8
    I was able to use a VMware Fusion virtual Windows 7 installation to perform the drive preparations. I did not have access to a true Windows PC either.

    I was able to get that method of creating an external Windows SSD working. However I am not using it currently because I was unable to get my VMware Fusion virtual Windows to locate the bootable external drive and install the VM to that image, probably because it wasn't in the OS X boot manager. I really like to have a single Windows installation which I can access either as a virtual machine from OS X, or as a bootable OS for games.

    ----------

    That would probably work, however you will probably have to delete "vape :) " that image before you will be able to complete the installation on the external drive.

    When I tried that, I could see either Windows boot-option at startup, but whichever one I selected always seemed to end up running my existing BootCamp partition, rather than the external drive. Moving the external Thunderbolt drive to a computer that didn't have a Windows BootCamp installation allowed the prepped drive to complete the installation and it ran normally.
     
  9. thread starter macrumors 68030

    Joined:
    Oct 31, 2007
    Location:
    London, UK
    #9
    Just to confirm, this did work (I deleted the boot camp partition after copying over the image but before installing, as suggested).

    I had a few issues getting the boot sector to copy over from the image as per the link - it didn't seem to like being connected via Thunderbolt, but I switched it to USB3 and it worked fine, and then switched back to using a Thunderbolt cable.
     

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