How to clone a drive on macOS Catalina

Here is how to make a clone MacOS Catalina drive on your Mac computer.


From macOS Catalina, the startup volume of user Macs will become a single volume, just as it appeared! If you are Fusion drive users, there will be two physical drives taken care of by software and appears as a separate “disk drive” from the data organization.

You might not know that Apple relies on a feature that is in Apple File System, which is called Volume group. With this feature, it can allow your Mac to link two separate volumes to be a single drive. This new feature is claimed to enhance the security, transferring read-only files on one volume and your changeable data, preference files, and the rest on the leftover one.

However, what to do if you want to clone your startup disk and then create a backup to use it as a point for restoring for a failed drive.

Time Machine manages your whole startup volume and other specific ones, allowing to restore a MacOS Catalina drive as the way you do on previous macOS versions.

Steps to create a clone of your Mac

Once you download your favorite cloning program, you simply open it and get started.  In this guide, I’m using SuperDuper to make a clone drive.

Step 1: Search for the SuperDuper! App on your Mac and open it

Step 2: Chooose your Mac’s hard drive from the menu next to “Copy.”

Step 3: Click on the external hard drive from the drop-down menu

Step 4: Make sure to back up all selected files in the drop-down menu

Step 5: Click on Copy Now to start the process.

Step 6: Enter your password of your Mac when prompted.

Step 7: Click on Copy to confirm that you need to erase the external hard drive and copy files to the new drive

Step 8: Click OK when the process is done.

Steps to restore your Mac drive from a clone

Due to some reasons, you need to restore your Mac computer, you can also use a clone to do that.  To do that:

Step 1: Power off your Mac and connect the external drive to it.

Step 2: Power it on and hold down the Command + R keys when the system restarts to boot into Recovery Mode. Your Mac will go into macOS Utilities screen.

Step 3: Click on Disk Utility and choose your hard drive

Step 4: Choose the Restore tab at the top window.

Step 5: Click on your external drive next to “Restore From.”

Step 6: Choose your Mac’s hard drive and restore it

After the backup completes restoring, restart your Mac.


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