How to Create A Bootable Clone for macOS Mojave?

donemax editorMaria updated on 2023/2/27 to Mac Disk Clone Solution

The data on a cloned Mac can be made bootable if you connect the disk to another Mac and boot it up. Whether installing a new or upgraded version of macOS, cloning your Mac's primary drive is a wonderful way to safeguard yourself against any difficulties. Traveling with a clone can ease your mind if you're concerned about your Mac getting lost, stolen, or destroyed.

Having a clone of your hard drive is invaluable if you need to recover data from a failed system, as it reduces the risk that you will lose everything before the original drive can be copied. In this article, we will show the method to make a bootable clone backup for macOS Mojave.

Prepare an external hard drive for cloning on Mac

It is important to have a suitable storage location before cloning a Mac hard disk for backup purposes. Using an external drive, ideally an SSD drive with adequate space to store a clone is a common practice. You must first format the external hard drive on the Mac before you can clone the hard drive to the SSD.

  1. Plug your external hard drive into your Mac's USB connector.
  2. Find the Disk Utility program by using the search bar in Spotlight.
  3. The Disk Utility app can be launched with a double click.
  4. Choose External, then look for the external hard drive. It will typically bear the name of the manufacturer.
  5. Go to the window's Erase tab.
  6. Drive format should be set to APFS or macOS Extended; give it a name and click the drop-down menu.
  7. Click Erase again.
  8. Once you're finished, click the Done button.
  9. Put an end to working in Disk Utility.

format disk on Mac

Create a bootable clone for macOS Mojave

The quickest way to make a bootable clone for your Mac is to use disk cloning application. Donemax Disk Clone for Mac gives Mac users a option for creating a bootable clone backup. Just download and install this software on your Mac. Then open it from Launchpad, if asked, just enter your user password to allow this application to run on your Mac.

Donemax Disk Clone for Mac

  • Create bootable clone backup for macOS Mojave.
  • Create disk image of any disk on Mac.
  • Clone HDD, SSD, external storage device on Mac.

Connect the external hard drive to your Mac and then open Donemax Disk Clone for Mac to help you clone Mac startup up disk to the external hard drive and make it be bootable.

Step 1. Open Donemax Disk Clone for Mac, you will see three disk clone modes: Disk Copy, OS Clone, Disk Image. To create a bootable clone for macOS Mojave, just choose the second mode - OS Clone.

Make A Bootable Clone Backup for Mac

Step 2. Select the external hard drive as the destination drive, and click on Clone Now button. It will securely clone all data including macOS Mojave, documents, apps, settings from your Mac startup disk to the external hard drive.

Create a bootable clone for macOS Mojave

Once the process gets finished, you can use the external hard drive as a backup or a bootable disk. If you want to set the external hard drive as a bootable drive for your Mac or other Mac, check this guide: how to change Mac startup disk >>

Create a bootable clone for macOS Mojave

Create A Bootable USB Installer of macOS Mojave

In some cases, you may need to install macOS Mojave from a bootable USB drive or external hard drive. Now, follow the guide below to create a bootable USB installer for macOS Mojave.

Create a bootable clone for macOS Mojave

What you will need:

  • A Mac OS Extended formatted USB flash drive or external hard drive, which is bigger than 14GB at least.
  • Download macOS Mojave installer from App Store.

Steps to create a bootable installer for macOS Mojave:

  1. Connect the USB flash drive you are using for the installer to your Mac.
  2. Open Launchpad, find Terminal and open this application.
  3. Copy and paste the command below into Terminal.
    sudo /Applications/Install\ macOS\ --volume /Volumes/UNTITLED
  4. Then press Return to enter the command. (replace ‘UNTITLED’ with the name of the USB flash drive)
  5. You need enter your login password to complete the process. It will erase the USB flash drive and create a Mojave installer on it. Once you see the ‘Install media now available at '/Volumes/Install MacOS Mojave' message (and hear the verbal confirmation) your macOS Mojave boot install disk is complete and it’s ready to use.
  6. If you want to install macOS Mojave via the bootable USB installer, just connect the USB flash drive to the Mac, then restart it. For Apple silicon Mac, hold and press Power button to enter into recovery mode, then select the USB flash drive and continue to install macOS Mojave. For Intel-based Mac, press Option key and then select the USB flash drive to install macOS Mojave on the Mac.


Make sure the HDD and SSD are connected to your Mac. Then open Donemax Disk Clone for Mac, choose mode Disk Copy. Select the HDD as the source drive, the SSD as the destination drive, then click on Copy Now button to clone the HDD to the SSD.
If you don’t have a backup, just download a data recovery app - such as Donemax Data Recovery for Mac to help you securely get lost data back.
Open Donemax Disk Clone for Mac, choose OS Clone mode and then clone macOS Mojave to an external hard drive. It can be used as a bootable clone backup.


Mac OS Mojave: How to make a hard drive copy which can be used as a bootable drive? Here, we'll walk you through the steps for making a hard disk copy in macOS Mojave. In this case, Apple has released a new version of its Mac OS. Many rely on local or external hard drives to store large amounts of data. Photos, movies, audio files, recordings, music files, folders, notes, contacts, documents, PDFs, and so on are all such files.

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Contributing Writer

Maria is one of the senior writers & editors of Donemax who lives and works in Sydney, Australia. She loves PC, Mac and Internet Technology. She has 6 years of writing articles about data recovery on PC/Mac, disk cloning solution, data eraser and computer OS optimization, etc. She is also interested in testing various software and digital products.