6 Replies Latest reply: Jun 17, 2009 7:01 PM by Sillie
Sillie Level 1 Level 1 (0 points)
I have a 17" iMac 1.83 GHz that I am selling but I want to reset it to its original factory settings. So far, I haven't found out how.

What I have done so far:
Erased all my files (that I could find)
Did a 7-time erase on all deleted files,
then a Zero Out erase on all deleted files.
I removed all programs I installed.

The problem is, I am still shown as the ADMIN and my password is set and I want to know if I can reset it all the way back to the original place, so the new owner has to go through the first start up process. I have both original start up disks 1 and 2. Can someone please talk me through how to get this all done?

iMac, Mac OS X (10.4.10)
  • Niel Level 10 Level 10 (272,365 points)
    Restart the computer from the original disk, use the Disk Utility in the Utilities menu to erase the drive while zeroing all the data, reinstall the OS from the disk, and upon restart, hold down the Command and S keys and enter 'shutdown -h now' without the quote marks into the prompt.

    (44678)
  • Sillie Level 1 Level 1 (0 points)
    I'm not sure I got all of that. I don't see where I can erase the drive, only that I can do a Zero Erase, a 7-Time, and a 35-time on deleted files.

    And by "restart the computer from the original disk" how do I do that?
    I'm sorry I'm not very good at this!
  • Limnos Level 8 Level 8 (41,490 points)
    Did you boot from your startup disc in the optical drive? That lets you erase the whole drive, not just deleted files. After that you will need to install the operating system to get it back to factory new, or just leave it as it is and let the new user install the operating system (though if you install the OS you can demonstrate to the new user the computer works).
  • Sillie Level 1 Level 1 (0 points)
    How do I boot from the startup disk in the optical drive?
  • Limnos Level 8 Level 8 (41,490 points)
    Put the disc in the drive. Restart the computer while holding down the C key.

    Read the links below on formatting a drive.

    [Formatting & Partitioning a Hard Drive in OS X - Tiger and Leopard|http://www.kenstone.net/fcphomepage/partitioningtiger.html]

    [Journaling, Zeroing, Partitioning & OS 9 driver|http://forums.bombich.com/viewtopic.php?t=4084]

    [Kappy's extensive hard drive formatting post|http://discussions.apple.com/thread.jspa?messageID=8340551&#8340551]

    [BDaqua's Formatting instructions|http://discussions.apple.com/message.jspa?messageID=8901255#890125 5]
  • Sillie Level 1 Level 1 (0 points)
    Thanks, I think I've got this fixed! I put in the OS disk and held down C and now it is erasing everything and reinstalling the original software. I HOPE that's all I have to do!