
The process of upgrading your computer varies depending on which version of macOS is currently installed on your computer.Īs of 10.15 Catalina, macOS does not support 32-bit applications. If this is the case, you will need to replace your current computer with a newer model. If your computer does not meet the minimum requirements for Catalina or Mojave, you will not be able to install a supported version of macOS. If you are running an older OS, you can look at the hardware requirements for the currently supported versions of macOS to see if your computer is capable of running them:

If, as time goes on, I find out about any other serious anomalies, I’ll update the book yet again.

This version has been “done” for some time, but as I ran through a few test installations of the final version of El Capitan today, I noticed some changes from the GM Candidate release I’d been working with, so I updated the manuscript in order to give readers the most up-to-date instructions. The new version (which is a free update to anyone who bought version 1.0) is roughly twice as long it adds step-by-step instructions for downloading and running the installer and dealing with all the little surprises that may come up thereafter. Version 1.0, which was published a few weeks ago, covered the process of preparing for the upgrade.

This morning, Apple released OS X 10.11 El Capitan, and this afternoon, Take Control published version 1.1 of my book Take Control of Upgrading to El Capitan.

Upgrade to El Capitan and Master Apple MailĪs has been my custom since 2003, when Apple released Mac OS X 10.3 Panther, I’ve written a book that helps people upgrade to the latest version of OS X.
