how to update from high sierra to catalina

To downgrade from macOS Catalina using a Time Machine backup, do the following: Keep in mind that you can get certain macOS Catalina features without upgrading your Mac in the first place. If you're not familiar with the process yet, make sure you have the steps handy on your phone or another computer. With a backup ready, you'll be able to downgrade from macOS Catalina should the need arise. That way, you ensure no recent files were left behind. If you already had Time Machine backups set up, we'd recommend making a manual backup right before you install the new macOS. After you set a backup disk, Time Machine starts automatically backing up your data without disrupting your workflow.If you want to protect the backup, check the box to Encrypt backups, though you should know that this will dramatically increase the time it takes. If that doesn't happen, go to Apple menu > System Preferences > Time Machine. When you connect the drive, you might be prompted to use it as a Time Machine backup disk.This Apple Support page lists the backup disks you can use with Time Machine. Connect an external storage device like a USB or Thunderbolt drive, an AirPort Time Capsule, or similar.Here's how to back up your Mac with Time Machine: It's an easy choice for your pre-update backup. Select Restart from the drop-down menu.How to Back Up Your Mac Using Time MachineĪs you probably know, macOS comes with a native backup tool called Time Machine.Click on the Apple icon in the upper left corner of the screen.Connect your Mac to the internet via Wi-Fi or Ethernet.Remember, back up your Mac before performing this step. You'll need to erase your hard drive before re-installing Catalina. If you don't feel comfortable making changes to your Mac with Terminal, you can create a bootable disk using the DiskMaker X program. Note: Making a bootable installer requires the use of Terminal. How to make a bootable macOS Catalina installer drive in case you want to downgrade from macOS Big Sur.You'll need a copy of macOS Catalina on an external hard drive for the easiest, fastest way to install the downgrade.įollow the steps linked below to make a bootable installer drive for macOS Catalina

Step 2: Create a bootable drive of macOS Catalinaīefore you downgrade your Mac and erase Big Sur from your computer, download macOS Catalina (opens in new tab) from the Mac App Store.

How to update from high sierra to catalina