cant even login now! everybody permission error on os x, please help

Discussion in 'macOS' started by 212rikanmofo, Apr 2, 2009.

  1. 212rikanmofo macrumors 65816

    Joined:
    Jan 31, 2003
    #1
    Sigh, I was having a weird "unknown" user group under my macintosh HD info panel. So i tried setting "everybody" to no access, and when i reboot now it wont even boot up into the login screen. Sigh!!!

    Can someone please help me fix this problem or tell me how i can change the everybody user group back to "Read Access" :(
     
  2. iBookG4user macrumors 604

    iBookG4user

    Joined:
    Jun 27, 2006
    Location:
    Seattle, WA
    #2
    I believe that it is time for you to get out your install disk and start from it. Once booted from the install disk, go to utilities and then select Disk Utility. Try to Repair Disk Permissions, if this does not work, then try an Archive and Install.
     
  3. 212rikanmofo thread starter macrumors 65816

    Joined:
    Jan 31, 2003
    #3
    sigh, i should've never listen to the website, arghhh... i wish i left it alone... what does archive and install do? will i lose everything on my mac? or will it keep all my current apps and settings intact?
     
  4. iBookG4user macrumors 604

    iBookG4user

    Joined:
    Jun 27, 2006
    Location:
    Seattle, WA
    #4
    An Archive and Install leaves all of your data intact, it only replaces the operating system. Here is the Apple support page on Archive and Installing. Try to repair permissions first though.
     
  5. nelson.zhu macrumors newbie

    Joined:
    Jan 20, 2009
    #5
    I have made this mistake before, set "everybody" to no access to all the files of macintosh HD
    I am running Leopard 10.5.6, if you running diffrent system, don't try it


    start the system in single-user mode (Command - S)
    /sbin/fsck -fy
    /sbin/mount -uw /
    /bin/chmod -R 777 /
    /bin/chmod -R 755 /usr /bin /sbin /etc /private /System /Library
    /bin/chmod 775 /var/run
    /bin/chmod 1775 /cores
    /bin/chmod 1777 /tmp /var/tmp
    /bin/mv /usr/bin/login /usr/bin/login.failed
    /bin/chmod 4755 /usr/bin/sudo
    /bin/chmod 0440 /private/etc/sudoers
    exit

    Once the system boots up, open /Application/Utilities/Terminal and type:


    sudo /usr/sbin/diskutil repairPermissions /
    chmod 4555 /usr/bin/login.failed
    chmod 4555 /usr/bin/rlogin
    mv /usr/bin/login.failed /usr/bin/login
     
  6. osin macrumors 6502

    Joined:
    Jun 8, 2008
    Location:
    New Jersey
    #6
    You're not alone.
    I did similar mistake on one of the first weeks of having my first Mac. The software that helped me back than was OnyX... it restored all permissions...
     
  7. 212rikanmofo thread starter macrumors 65816

    Joined:
    Jan 31, 2003
    #7
    will this get rid of the "UNKNOWN" group and replace it with Admin? I believe that is how it should be... I am running 10.5.6. After I set everybody to NO ACCESS. I can't even shut down. it keeps going into this endless loop.
     

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