Lost iMac Passwords

Discussion in 'iMac' started by harpjw, Nov 13, 2010.

  1. harpjw macrumors newbie


    Nov 20, 2007
    I have inherited a iMac G5, that's good. The password has been forgotten and the Admin. password lost, that's bad. I've tried:

    Restarting the computer while holding down the command and s keys at the same time.
    Typing /sbin/fsck -y. To do a quick check of the hard disk before mounting it.
    Typing /sbin/mount -wu / for read/write access, also tried
    Typing /sbin/mount -uw / as an alternative
    Typing /sbin/SystemStarter" Starting the network services, which is necessary to gain access to NetInfo
    Typing, passwd root, to override the existing root password with one of my own. But the system has not allowed me to write.

    I've typed, nidump passwd . However the system does not recognize the command.

    What can I try?
  2. Hellhammer Moderator


    Staff Member

    Dec 10, 2008
  3. harpjw thread starter macrumors newbie


    Nov 20, 2007
  4. Chozo macrumors member

    Jun 23, 2008
    There are a few ways to do it. I'm quite surprised actually how easily (if you know what you're doing) you can change admin passwords without knowing them on a Mac is...

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