Skip to Main Content
Take Control of Upgrading to Catalina
book

Take Control of Upgrading to Catalina

by Joe Kissell
October 2019
Intermediate to advanced content levelIntermediate to advanced
132 pages
2h 50m
English
Take Control Books
Content preview from Take Control of Upgrading to Catalina

Troubleshoot Upgrade Problems

Even if you diligently followed all the instructions in this book, you might encounter problems while upgrading. I can’t anticipate every difficulty you may have (or provide solutions in every case), but here are some of the most likely issues and how to deal with them.

Can’t Run the Catalina Installer…

If the Catalina installer icon has a slash through it, or if you try to run it and it quits immediately, the likely causes are:

  • You’re trying to run it on a Mac whose CPU is incompatible with Catalina (see Model Support for full details). Solution: Buy a new Mac. (Sorry.)

  • The installer didn’t fully download, or the file was damaged. Solution: First delete the installer. Then open the App Store app, click Purchased, ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Take Control of Upgrading to High Sierra

Take Control of Upgrading to High Sierra

Joe Kissell
Take Control of Catalina

Take Control of Catalina

Scholle McFarland

Publisher Resources

ISBN: 9781492071969Errata Page