Ugpgrading an old iMac G4 800 mhz

Discussion in 'iMac' started by PROPER JoN, Apr 16, 2011.

  1. PROPER JoN macrumors newbie

    Apr 16, 2011
    Hi all this is my first post and i'm a bit of a newbie when it comes to computers so bear with me. i've just inherited a old iMac G4 with no install disks. it's running 10.2.2!! so what i want to do is upgrade it to 10.4

    i have the tiger install disks but when i try to run it the mac asks me for a password but my friend can't remember the password because it was so long ago. Is there any way round this? i have searched other threads but i couldn't find anything that matches my situation. thanks for the help people
  2. blevins321 macrumors 68030

    Dec 24, 2010
    Winnipeg, MB
    I think Tiger included a disk utility on the boot disk. Boot from the disk and go to Utilities>Disk Utility in the top menu bar after you select the language. You can format (erase) the drive from here without a password.
  3. spacepower7 macrumors 68000

    May 6, 2004
    There are two ways that to require a password in this situation. I'll tell you about the simple one, if it doesn't work then post back here.

    The Mac is asking for the administrator password.
    Restart the computer with the tiger disc inside and hold the c key, if that doesn't work, try the option key, then select the cd to boot from.

    Once booted from the cd/DVD, you should be able to upgrade without a password.

    You should also reset the admin password to your own when booted of the DVD or even wipe the internal drive to start fresh, without your friends data or user account. I recommend the latter.

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