Disk layout

Discussion in 'OS X Yosemite (10.10)' started by jimmycap, Oct 28, 2014.

  1. jimmycap macrumors newbie

    Joined:
    Oct 28, 2014
    #1
    Hi

    As many, I've installed Yosemite on a new partition I created while running Mavericks. Now that I've installed the GM, I want to erase my Mavericks partition and merge it with the one I'm running Yosemite on. That way, I can reclaim the lost diskspace.

    However, the order of my volumes doesn't seem to support simple GUI merge via Disk Utility. A screenshot of my partitions:

    [​IMG]

    To be clear: 'Macintosh' is the partition I'm running Yosemite on, 'Misc' is my old partition which used to have Mavericks. 'Synced' should remain untouched. Some more info from the CLI:

    Thanks for your input.

    Jimmy
     
  2. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #2
    Disconnect any other mounted drives then run the command below in Terminal. That will turn off the core storage and allow the partitions to be manipulated.

    Code:
    diskutil cs revert /
    Once the revert is done, reboot to recovery with a command-r boot.

    Now launch Disk Utility and go to the restore tab. Drag Macintosh into the source and Misc into the destination and click restore. That will clone one to the other.

    Now click under the Apple menu and select Misc and the startup disk and reboot.

    You should now be running on Yosemite on the Misc volume. Poke around to make sure everything looks okay.

    Now start Disk util and click select the Macintosh volume then click the minus to remove it. Then resize Misc to fill the empty space and apply the change.

    That should do it.

    You can rename Misc in Finder by select then enter if you want.

    Of course backup before doing any of this in case it goes badly.
     
  3. jimmycap thread starter macrumors newbie

    Joined:
    Oct 28, 2014
    #3
    Hi

    Thanks. I'll try this.

    So it is because of CoreStorage that this was not possible?

    Jimmy
     
  4. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #4

    Yes exactly.
     

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