boot up problems, please help. urgent

Discussion in 'Mac Basics and Help' started by johnny-L, May 13, 2009.

  1. johnny-L macrumors newbie

    May 13, 2009
    long time lurker, first time poster

    last night i changed the permissions on my macbook to stop my files being shared. now when i log in i cant get past the grey boot up screen

    i was told its because of problems created from changing the permissions.

    i booted up holding shift and nothing happened
    i booted up in in verbose and it says theres no posix_spawnp("/usr/sbin/mDNSresponder", ...) over and over

    i booted up with cmd+s and got

    If you want to make modifications to the files
    /sbin/fsck -fy
    /sbin/mount -uw

    If you wish to boot system

    I dont want what to do here, Im afraid to start messing with it. I really need to get the files in my HD, I'm doing finals right now!!

    thanks for all your help
  2. r.j.s Moderator emeritus


    Mar 7, 2007
    Boot from the install disc, and run Repair Permissions from there.
  3. johnny-L thread starter macrumors newbie

    May 13, 2009
    i managed to fix it myself

    for anyone else who has this problem type

    mount -uw /
    chmod 775 /

    and it should work perfectly

    thanks anyway guys
  4. PrincessOlive macrumors newbie

    Jan 26, 2012
    you are amazing!! i had your same issue and nothing worked EXCEPT your helpful answer to your own question - thank youuuuu! also, did you run into this same issue again? or was it a one time thing for you? thankssssssssssss :D

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