![]() ![]() You can do the same process in reverse if you need to copy the files back over, or restore the backup should your computer decide to break. Any settings you change or files you save there won’t be reflected on your primary installation. You can use your Mac as normal, but keep in mind that it’s separate from the installation on your main internal hard drive. This brings up the boot switcher and lets you boot from the external hard drive. This can take fairly long, depending on the speed of your external drive and its connection to your Mac, so it’s best to have a fast hard drive with Thunderbolt, USB-C, or USB 3.0 connections.Īnd that’s it! When Disk Utility is done, you can shut down your Mac and hold down Option when booting it back up. To clone your Hard Drive, the MacOS provides you with an inbuilt feature with Disk Utility, making it super easy and reliable to clone your Macs Hard Drive. You can also choose an ISO image, but that doesn’t have much use here.Ĭlick “Restore,” and Disk Utility will start the copying process. For now I've decided to do a fresh re-install of everything on the hard drive since the computer was in for hard drive related repairs, and my clone copy would potentially contain errors because of reading errors. Select your external drive in the sidebar, click “Restore” in the menu, and then select your main drive as the “Restore From” option. It all seems quite complicated (except the physical hard drive copy/clone dock doing a block copy of the drive). But, if you choose your external drive as the restore target, you can flip that action around and copy files from your main drive to the backup.
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