Help! Wiping and Starting Over: Disk Utility options grayed out!

Discussion in 'OS X Yosemite (10.10)' started by mechanicalelf, Aug 30, 2014.

  1. mechanicalelf, Aug 30, 2014
    Last edited: Aug 30, 2014

    mechanicalelf macrumors newbie

    Joined:
    Aug 29, 2014
    #1
    New Mac user, freaking out. Literally all buttons are grayed out on DU after a Command + R on Restart. I'm trying to follow another threads instructions on how to wipe and start over after not being allowed back HALF of my HDD space was set aside for W8.1 (I mistakingly [no one warns of this!] partitioned my HDD before using Bootcamp to make a bootable USB... I just wanted to play Steam games)... Now it's just phantom "Free Space". Right now my brand new MacBook is nearly useless and I have no way of fixing it. HELP!

    Running Yosemite beta
     
  2. crjackson2134 macrumors 68020

    crjackson2134

    Joined:
    Mar 6, 2013
    Location:
    Charlotte, NC
    #2
    Did you make a full disk backup before messing around with the partitions?
     
  3. mechanicalelf thread starter macrumors newbie

    Joined:
    Aug 29, 2014
    #3
    No, and I don't care to. I can start from scratch. It's only a few days old. I wont really loose anything. And I don't have an external HD big enough (32G or something, and my flash drive is 16G)

    Now, I just want to wipe and restart from scratch. I know I screwed up. It sucks. BUT it wont LET me do this. Do I need to post a screenshot? Basically, when using Disk Utility from the cmd+r on restart (and on regular os) all options, literally everything inside the Partition tab, is grayed out and unselectible. Wth
     
  4. mikecwest macrumors 6502a

    mikecwest

    Joined:
    Jul 7, 2013
    #4
    You need to revert you drive from CoreStorage back to normal.

    It goes something like this in terminal

    see your disks by typing into terminal

    diskutil list

    ...Mine was disk1....

    diskutil cs revert disk1
     
  5. mechanicalelf, Aug 30, 2014
    Last edited: Aug 30, 2014

    mechanicalelf thread starter macrumors newbie

    Joined:
    Aug 29, 2014
    #5
    AWESOME I think this will work--before I do this though--which do I want to use, disk1 or disk0?

    http://i.imgur.com/XFYNxK0.png


    EDIT: Found help on reddit. Thanks though!
     
  6. benthewraith macrumors 68040

    benthewraith

    Joined:
    May 27, 2006
    Location:
    Miami, FL
    #6
    I had this problem too and went through the normal Boot Camp procedure for both install and uninstall. I ended up deleting the corestorage volume and reinstalling.
     
  7. mechanicalelf thread starter macrumors newbie

    Joined:
    Aug 29, 2014
    #7
    Someone suggested that to me, but I had done another method just beforehand. Glad to know there are solutions. Cheers
     
  8. mikecwest macrumors 6502a

    mikecwest

    Joined:
    Jul 7, 2013
    #8
    I know I'm a bit late, but was it disk1?
     
  9. mechanicalelf thread starter macrumors newbie

    Joined:
    Aug 29, 2014
    #9
    I'm not sure! I ended up doing a different method from that reddit response. This was sure to work I'm certain though. Thanks for the help anyhow!
     
  10. mikecwest macrumors 6502a

    mikecwest

    Joined:
    Jul 7, 2013
    #10
    Some guys, even on here insist on using the UUID which is a big long number like "4928D289-899F-439C-727B", it should however do the same thing.

    In the end, was the result turning off core storage (and not reformatting your hard drive?)
     
  11. mechanicalelf thread starter macrumors newbie

    Joined:
    Aug 29, 2014
    #11
    Yes, it was core storage change. Although I didn't mind if I had to, I am glad I didn't have to reformat. Thanks!
     
  12. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #12
    From his screenshot, yes it would be disk1.
     

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