How to sector level clone Mac hard drive to another hard drive?

Posted by Katrina to Mac Data Recovery on March 30th, 2018

Sector level clone on Mac means to clone Mac hard drive sector by sector. As an efficient way to back up contents of a hard drive, sector level clone guarantees the same files and physical location as they are in the source disk. In other words, if you clone a Mac hard drive to another hard drive, you actually create its portable backup and you can use it to boot any Mac based machine.

Usually, people sector clone Mac hard drive to another hard drive for insufficient disk space, higher efficiency, or data backup. No matter what the reason is, this post will show you two solutions to sector level clone Mac hard drive to another hard drive.

Tutorial to sector level clone Mac hard drive to another hard drive

There are various ways to sector level clone Mac hard drive to anther hard drive, here are two free ways. But before cloning, some preparatory work needs to be done.

Preparatory work

1. Be sure the target hard drive is successfully connected to the same computer.

2. Make sure the storage space of the target disk is large enough to hold all the data in the source disk.

3. Make sure if the secondary hard drive is brand new or it has already been used with the Mac.

For brand new hard drive, you have to format and partition it, because you cannot use it in RAW state for booting or even for data storage.

For used hard drive, make sure the data on the target disk have been backed up because the process will format the target hard drive.

Solution 1: Clone Mac hard drive sector by sector with Disk Utility

Step 1: Launch Disk Utility from Applications/Utilities/Disk Utility.

Step 2: Select the primary drive in the left pane and click the Restore tab in the right pane.

Step 3: Drag the primary drive from the left pane to the right, and then drop it in the Source field.

Step 4: Likewise, drag the secondary drive from the left pane to the right and drop it in the Destination field.

Step 5: Click the Restore button to start drive cloning.

Solution 2: Use free disk cloning program to sector level clone Mac hard drive

Clonezilla live is a free and open source disk cloning program that supports countless file systems. Clonezilla has the ability to create an image from Mac OS X. Meanwhile, it can handle dual-boot and triple-boot environments using Windows and Linux. With Clonezilla, we can easily and quickly clone Mac hard drive to another hard drive sector by sector.

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