1 2 Previous Next 21 Replies Latest reply: Jul 29, 2012 7:39 AM by GM1941
GM1941 Level 1 Level 1 (10 points)

I was not a able to install Mountain lion.  Got a message that my drive was not guild.  I had 3 partitions, Mac HD, Boot Camp, and a Shared drive.  I could not repartition, options tabs were grayed out.  I deleted the Boot Camp drive and the shared.  Left with one Mac HD drive.  It was guild. I could not repartition this drive because it said it could not "unmount". I do not have my install/back up drive anymore.  Not sure where it went.  Now when I try to install Mountain Lion it just hangs up.  Can't seem to reinstall from my time machine either.  My machine is working fine otherwise.  Any ideas how to approach this?

 

I have a 15" Macbook pro with all the current updates of 10.7.4.

  • 1. Re: Multiple problems
    Barney-15E Level 8 Level 8 (35,275 points)

    Were you booted into the Recovery HD when you attempted to do all of this, or in the Mountain Lion Installer, or just in Disk Utility from your Applications/Utilities?

  • 2. Re: Multiple problems
    GM1941 Level 1 Level 1 (10 points)

    I was in Disk Utility from the recovery drive. 

  • 3. Re: Multiple problems
    Barney-15E Level 8 Level 8 (35,275 points)

    Can you repair the disk?

    When you select the disk, not the volumen, does it say it is GUID Partition Table?

  • 4. Re: Multiple problems
    GM1941 Level 1 Level 1 (10 points)

    Yes I can repair the disk.  The volume says it is GUILD the disk/drive does not show map scheme.

  • 5. Re: Multiple problems
    Knoddix Level 1 Level 1 (125 points)

    IF you are not concerned about the data on the drive open disk

    UTility from recovery HD then select the disk above Macintosh hd

    THen erase it using the format Mac os extended journaled that should force a guid

    Partition then close disc utility then try install os x if that fails and you have a Mac introduced

    IN 2011 or later boot to Internet recovery by holding command option and r

    WHen u first turn on the Mac and repeat the above mentioned steps

    NOte : internet recovery method may result in a lion not mountain lion install but as least it will be bootable

  • 6. Re: Multiple problems
    GM1941 Level 1 Level 1 (10 points)

    I would be happy to wipe everything out and start over but do not know how to do it safely.  I don't seem to have a recovery partition any longer, I download the Lion from the Internet so I don't have a hard copy, I do have mountain lion on the drive but it wont load.  I have a current time machine back up.

  • 7. Re: Multiple problems
    Knoddix Level 1 Level 1 (125 points)

    OK did the machine come with lion or snow leopard ?

  • 8. Re: Multiple problems
    GM1941 Level 1 Level 1 (10 points)

    I have a pre 2011.  The HD recovery is there when I reboot holding down the "option" key.  When I click on it it try's to install and gives a message the installer failed.

     

    I cannot do any thing with the drive in disk utility.  It will only allow me to erase the free space.  Everything else is grayed out.

  • 9. Re: Multiple problems
    Knoddix Level 1 Level 1 (125 points)

    ARe the options under the partition tab greyest out as well or do you have a snow leopard install DVD

    BEcause the other thing you could do is boot to the snow leopard disc then install that then update to 10.6.8 then download mountain lion installer from the AppStore and at that point I would suggest creating a mountain USB installation drive before installing mountain lion again I know this way is the long way but in theory it would work

  • 10. Re: Multiple problems
    Barney-15E Level 8 Level 8 (35,275 points)

    GM1941 wrote:

     

    Yes I can repair the disk.  The volume says it is GUILD the disk/drive does not show map scheme.

    With the disk selected, here is what you should see in the lower part of the Disk Utility Screen:

    Screen Shot 2012-07-28 at 2.28.23 PM.png

    Does it not show: Partition Map Scheme: GUID Partition Table ?

  • 11. Re: Multiple problems
    GM1941 Level 1 Level 1 (10 points)

    This is what I see

     

    Screen Shot 2012-07-28 at 5.10.37 PM.png

  • 12. Re: Multiple problems
    Knoddix Level 1 Level 1 (125 points)

    SElect the grey rectangle above Mac had and see if the options under the erase tab are still greeted out

  • 13. Re: Multiple problems
    Knoddix Level 1 Level 1 (125 points)

    SElect the grey rectangle above Mac hd and see if the options under the erase tab are still greyed out

  • 14. Re: Multiple problems
    GM1941 Level 1 Level 1 (10 points)

    Still grayed out if this is what you are refering to.

     

    Screen Shot 2012-07-28 at 5.25.35 PM.png

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