Install DropBox or another cloud sync program.With this approach, as you probably understand, you lose all your documents and all your apps. So your only option is to erase the disk and install Mojave as a new install. The problem with macOS upgrades is that Mac does not allow to install earlier OS versions. In this case, the process is much more complicated and involved. I understand that most people will not be as lucky as me and wouldn’t have a backup ready. Option 2 to Downgrade macOS Catalina to macOS Mojave The Time Machine will erase the primary disk on your Mac and copy a disk image prior to the Catalina upgrade. Select the date and time you want to restore.Select the disk where the last backup is stored.In the menu on the screen, find and click on “Restore From Time Machine Backup.”.Keep pressing Option+R keys until the Apple logo appears on the screen. Start your Mac without releasing the keys. Then press Option (Alt) and R keys simultaneously. In order to restore a backup here’s what you have to do: The great thing about Time Machine backups is that you can restore the entire disk image, including all apps, documents, and even the operating system. If you have backups taken before the upgrade, restoring from a backup is by far the best option you have. While I forgot to turn off auto OS updates in System Preferences, I was still lucky because I keep taking Time Machine backups periodically. Option 1 to Downgrade macOS Catalina to macOS Mojave You basically have three options to solve the issue. If you are in the same situation as me, if you have some programs that you must have and Catalina doesn’t allow them to run, you are thinking about downgrading from Catalina back to Mojave.
#Downgrade to macos catalina upgrade
And I can’t upgrade because they are not supported anymore, and there had no 64-bit versions for me to switch. Apple warned me when I ran those apps that I have to make sure to upgrade to 64-bit versions if possible because the next OS will drop the support for my old applications.Īs soon as I knew this, I supposed to turn off automatic operating system updates, but I didn’t.Īs a result, my Mac updated to macOS Catalina, and I lost the ability to run my older apps. However, I knew that the macOS I had before upgrade – Mojave – is the latest OS that still supports 32-bit apps. I always keep telling everyone to have automatic updates turned on if you have a Mac, and in most cases, this is good advice.
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