Wonder a way to clone macOS to an external hard drive? Is there any suggestion?
You can clone macOS to an external hard drive with the assistance of Disk Utility. The external hard drive with the copied OS can be used as a boot drive. If you just want to clone macOS to an eternal hard drive as a backup database, then you’re recommended to use iBoysoft DiskGeeker for Mac which clones the hard drive to the target disk with stable and fast speed.
Here is how to clone the macOS as the backup database:
Step 1: Connect the disks you need to use to your Mac and launch iBoysoft DiskGeeker.
Step 2: Select the source disk (the entire disk you want to back up files from) at the left sidebar of the iBoysoft DiskGeeker window.
Step 3: Click “Clone” from the right toolbar.
Step 4: Choose a destination drive from the pop-up list and click startClone. A prompt will warn you that making a backup of the destination disk because cloning the disk will overwrite all data on it. If you click OK, the clone starts.
The cloning process can’t be terminated once it begins. If the process is terminated accidentally, the disk cloning will resume automatically when the two disks are connected to your Mac again.