Updating os x
When you’re ready to upgrade to Leopard (OS X 10.5), you will need to decide what type of installation to perform.
OS X 10.5 offers three types of installation: Upgrade, Archive and Install, and Erase and Install.
Mac OS X succeeded "classic" Mac OS, which was introduced in 1984, and the final release of which was Mac OS 9 in 1999.
An initial, early version of the system, Mac OS X Server 1.0, was released in 1999.
Apple makes no representations regarding third-party website accuracy or reliability.
There are so many reasons to upgrade to mac OS Sierra now.
This is a useful option when you need to update multiple computers, but only want to download the update once.
Standalone installers are available from Apple Support Downloads.
You should also have your Apple ID and password handy.
If you’re unable to correct the problems you’re experiencing, then you may wish to consider one of the other installation types (Archive and Install or Erase and Install), in order to end up with a correctly functioning installation of OS X 10.5 Leopard.
If you’re ready to perform an upgrade installation of OS X 10.5 Leopard, then gather up the necessary items and we’ll get started.
Handoff requires an i Phone, i Pad or i Pod touch with a Lightning connector, and i OS 8 or later.
Upgrading ensures that you have the latest security features and performance enhancements. Before you upgrade, we recommend that you back up your Mac.