Please help! I think I've wiped my drive

Discussion in 'Mac Basics and Help' started by studio81, Aug 26, 2015.

  1. studio81 macrumors member

    Joined:
    Jan 6, 2010
    #1
  2. Taz Mangus macrumors 68040

    Taz Mangus

    Joined:
    Mar 10, 2011
    #2
    Try this, reboot the computer while pressing the OPTION-key. You will see a screen showing the boot partitions. Do you see your hard drive listed? If you do select it and you should see your computer boot properly.
     
  3. studio81 thread starter macrumors member

    Joined:
    Jan 6, 2010
    #3
    Thanks Taz, tried that. I enter my password (drive is encrypted) and get the loading progress bar which takes ages (it's usually quite quick). It gets to about half way then I get a white icon, circle with a line through it.
     
  4. studio81 thread starter macrumors member

    Joined:
    Jan 6, 2010
    #4
    Disk utility in recover mode States:

    Verify volume failed: unrecognised file system

    The verify and repair disk buttons are greyed out but the microscope icon provides the above message.
     
  5. Taz Mangus macrumors 68040

    Taz Mangus

    Joined:
    Mar 10, 2011
    #5
    Try rebooting while pressing the shift-key. This will boot into safe mode.

    EDIT: I posted this at the same time your posted your post above.
     
  6. Taz Mangus macrumors 68040

    Taz Mangus

    Joined:
    Mar 10, 2011
    #6
    It looks like the partition got damaged. Hopefully you have a backup of your user data.
     
  7. studio81 thread starter macrumors member

    Joined:
    Jan 6, 2010
    #7
    Thanks Taz, tried that now, twice. Same thing, prompt for password, slow progress bar, then halfway and I get the icon.
     
  8. Taz Mangus macrumors 68040

    Taz Mangus

    Joined:
    Mar 10, 2011
    #8
    See my reply in post #6.
     
  9. studio81 thread starter macrumors member

    Joined:
    Jan 6, 2010
    #9
    Cheers Taz, seems I'm out of luck then. I do have a backup but it will be a pain to restore, I was hoping to avoid it.

    Oh well!

    Thanks for your help
     
  10. studio81 thread starter macrumors member

    Joined:
    Jan 6, 2010
    #10
    Ok I can't even reinstall the OS either! When I select the drive for install I get the error:

    This disk doesn't use the GUiD partition table scheme. Use disk utility to change the partition scheme. Select the disk, choose the partition tab, select the volume scheme and then click options.

    I try and follow those instructions but the options button is greyed out. Selecting erase results in the error:

    Disk encryption failed
    Disk encryption failed with the error:
    Invalid attempt to unmount a whole disk containing a partition map

    Not sure what to do now
     
  11. Fishrrman macrumors G4

    Joined:
    Feb 20, 2009
    #11
    OP wrote:
    "I try and follow those instructions but the options button is greyed out. Selecting erase results in the error:
    Disk encryption failed
    Disk encryption failed with the error:
    Invalid attempt to unmount a whole disk containing a partition map
    Not sure what to do now"


    I can't help you now, but I'll make a few suggestions for the future:
    - Don't play with some terminal commands unless you absolutely know what results they will produce.
    - Keep a bootable cloned backup made with either CarbonCopyCloner or SuperDuper. If you had one, you wouldn't be posting now.
    - Don't use disk encryption unless you really REALLY need it.
     
  12. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #12
    Okay... so you can get to the recovery screen then? Go back there and in the Utilities menu, open Terminal and enter the following two commands one after the other. Then come back here and post the output of those commands and we can help you.

    What OS X version are you on?

    Code:
    diskutil list
    Code:
    diskutil cs list
     

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