Changed HD permissions. Mac won't get past the blue screen on boot..

Discussion in 'macOS' started by Mr. Syntax, Jul 17, 2011.

  1. Mr. Syntax macrumors newbie

    Jul 17, 2011
    In trying to modify user permissions for network trouble shooting, I went into my Get Info option on my Macintosh HD and changed the permissions of "Everyone" from "Read Only" to "No Accesss".
    After doing that*, my Mac won't boot past the blue screen but will successfully boot in single user mode.

    To worsen things:
    *This is my only computer besides the public library.
    *I don't have install DVDs.

    Doing a fsck -yf did not solve the problem.
    Attempting to run diskutil gives an error message "unable to run because unable to use the Diskmanagement framework" "the diskarbitration framework beig unavailable to being booted in single user mode".

    So my question is: Is there a way to reverse the mess I made from single user mode?. I'll be searching the series of tubes for an answer but I'm also aware that there are some CLI gurus around here.

    Thanks a lot for your help.
  2. Modernape macrumors regular

    Jun 21, 2010
    You do have a backup (Time Machine or a clone) I hope?
  3. Mr. Syntax thread starter macrumors newbie

    Jul 17, 2011
    I don't. When i bought my computer the software came pre-installed on my machine and i never got installation discs.
  4. Madd the Sane macrumors 6502a

    Madd the Sane

    Nov 8, 2010
    Wirelessly posted (Mozilla/5.0 (iPod; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)

    Get an install DVD and repair permissions. Or repair permissions from the command line.
  5. Mr. Syntax thread starter macrumors newbie

    Jul 17, 2011
    How do I repair permissions from the command line?
  6. old-wiz macrumors G3

    Mar 26, 2008
    West Suburban Boston Ma
    How could you possibly repair permissions from the command line if you cannot even boot the system at all?

    The OP needs a valid install DVD or a retail DVD. Be warned that a re-install is often the only way to completely fix the problem.
  7. iLog.Genius macrumors 601


    Feb 24, 2009
    Toronto, Ontario
    If it's the blue screen you're stuck at, try booting into safe mode by holding down the shift key on start up. If that doesn't work, then you'll have to get an install disc and repair permissions.

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