Mac OS X 10.2: Upgrade installation requires Mac OS X 10.1 or later

This article has been archived and is no longer updated by Apple.

If you have Mac OS X version 10.0.4 or earlier installed, the hard disk must be erased prior to installing version 10.2 or later. The Installer offers an option to "Erase and Install."


When you select a volume that contains Mac OS X 10.0 to 10.0.4 system software, an alert box with this message appears:

    "You cannot install Mac OS X on this computer without changing your install setting."


The version 10.2 "Mac OS X Install Disc" or "Mac OS X Upgrade Disc" cannot be used to upgrade Mac OS X versions 10.0 to 10.0.4. The Mac OS X 10.2 Installer can upgrade Mac OS 10.1 or later.

Choose "Erase and Install" in the Mac OS X 10.2 Installer.

Warning: Choosing Erase and Install will completely erase the contents of the chosen volume before installing Mac OS X 10.2 or later. Be sure to back up your files before continuing. To learn more, see Mac OS X: How to Back Up and Restore Your Files".
Last Modified: Feb 17, 2012

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