Resolved Help! Disk Utility doesn't won't resize a partition on the external drive :S

Discussion in 'macOS' started by NazgulRR, Jul 25, 2011.

  1. NazgulRR, Jul 25, 2011
    Last edited: Jul 26, 2011

    NazgulRR macrumors 6502

    Joined:
    Oct 4, 2010
    #1
    Situation:
    So I have a 1TB external drive with these 3 partitions:
    - partition1 (253GB) (if it matters, this one is a bootable clone of my MBP drive made by CCC)
    - partition2 (496GB)
    - partition3 (249GB)

    Aim:
    Downsize partition3 to 179GB
    and then
    Upsize partition1 to 321GB

    Problem:
    I managed to resize partition3, but partition1 just won't go up to 320GB :(. If I put "320" in the Size field and partition the drive, Disk Utility just verifies, unmounts and remounts without any change in size :S. FYI, there is more than enough of unpartitioned space left on the drive. (You can do the math yourself).

    So..why doesn't Disk Utility resize the desired partition?

    Screenshot of the external drive in the Disk Utility:
    [​IMG]
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    Because partition 2 is in the way, and partitions need to be continuous.
     
  3. NazgulRR thread starter macrumors 6502

    Joined:
    Oct 4, 2010
    #3
    Oh, I was afraid it would be that :/.

    What if I delete Partition1 and make a new partition with the size of 321GB at then end of the drive? Would that work? Would it be bootable then even though it is at the end of the drive?
     
  4. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #4
    It will not work, as partition 2 is still in the way.
    You have to copy everything off the drive, the repartition it as you want, during which everything gets deleted, then copy it back.
    To have a bootable partition, it doesn't matter where the partition is, it just needs to be HFS+ formatted on a GUID partitioned HDD (like yours is).
     
  5. NazgulRR thread starter macrumors 6502

    Joined:
    Oct 4, 2010
    #5
    Oh, so the unpartitioned space does not accumulate at the end of the drive? Damn, I have nowhere to backup the middle 500GB partition :(.
    Is there maybe any 3rd party software that would allow me to partition the drive as I wish without losing any data (or at least without losing any data on the middle partition)?
     
  6. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #6
    Maybe: http://www.prosofteng.com/products/drive_genius_features.php
     
  7. Jolly Jimmy macrumors 65816

    Jolly Jimmy

    Joined:
    Dec 13, 2007
    #7
    Risky business performing that kind of partitioning without a backup for if something goes wrong.
     
  8. NazgulRR thread starter macrumors 6502

    Joined:
    Oct 4, 2010
    #8
    Yeah, decided to just live with the way I have it now.
     

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