1 Reply Latest reply: Jun 3, 2014 4:38 PM by Kappy
HaileyS. Level 1 (0 points)

I need to sell my mac but I need to perform a factory reset on it first and Im not sure how to do that. Im not finding any information online that is really useful... I have the original installation discs and I tried going in to delete the hard drive except its not letting me. Help!

iMac, Mac OS X (10.5.8)
  • Kappy Level 10 (266,058 points)

    Clean Install of Snow Leopard


    Be sure to make a backup first because the following procedure will erase

    the drive and everything on it.


         1. Boot the computer using the Leopard Installer Disc or the Disc 1 that came

             with your computer.  Insert the disc into the optical drive and restart the computer.

             After the chime press and hold down the  "C" key.  Release the key when you see

             a small spinning gear appear below the dark gray Apple logo.


         2. After the installer loads select your language and click on the Continue

             button. When the menu bar appears select Disk Utility from the Utilities menu.

             After DU loads select the hard drive entry from the left side list (mfgr.'s ID and drive

             size.)  Click on the Partition tab in the DU main window.  Set the number of

             partitions to one (1) from the Partitions drop down menu, click on Options button

             and select GUID, click on OK, then set the format type to MacOS Extended

             (Journaled, if supported), then click on the Apply button.


         3. When the formatting has completed quit DU and return to the installer.  Proceed

             with the OS X installation and follow the directions included with the installer.


         4. When the installation has completed your computer will Restart. Do not proceed past

             this point. Just shut down the computer. Be sure to include all you discs.