Disk utility - partition - help needed

Discussion in 'OS X Yosemite (10.10)' started by jan_h_clausen, Aug 15, 2015.

  1. jan_h_clausen macrumors newbie

    Aug 15, 2015
    Hi at some point I made 2 partitions on my macbook pro, one with OS X yosemite beta and one with the stable mountain lion. Now I'd like to combine the to partitions to one (right now they're both 60gb), but somehow I dont seem to manage it. I tried changing the partitions after reboot with apple-R pressed, did not help.
    I have spent hours skimming thru forums without finding a solution.

    I pasted a picture of how it looks like right now inside disk utility.

    Is there anybody who can help me out?

    Kind regards,
    Jan C,

    Attached Files:

  2. !!! macrumors 6502


    Aug 5, 2013
    It appears as if it separated the disk into 2 separate disks, for each partition. I'm not an expert but maybe this is a CoreStorage issue? What happens if you time "diskutil cs list" into the terminal?
  3. Taz Mangus macrumors 68040

    Taz Mangus

    Mar 10, 2011
    Your partition is configured as core storage. Open the terminal application in Applications/Utilities and enter at the command line:
    diskutil cs revert /
    Reboot your computer and then you will be able to resize the partition again.
  4. jan_h_clausen thread starter macrumors newbie

    Aug 15, 2015
    Thank you very much, it worked!! I now got access to the whole disk.
    Thanks for your help, both.

    Kind regards,
    Jan C.
  5. Taz Mangus macrumors 68040

    Taz Mangus

    Mar 10, 2011
    No problem. Glad I was able to help.

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