How To Mirror Two External Hard Drives Mac

Mirroring two external hard drives on macOS can be a great way to easily back up your data and keep it safe. This allows you to have an exact copy of your information stored on multiple hard drives, ensuring that if one drive fails, you still have another copy of your data. In this article, we’ll walk you through the steps to mirror two external hard drives on a Mac.

Step 1: Connect the Hard Drives

The first step to mirroring two external hard drives is to connect the drives to your Mac. Depending on the type of drives you have, you can connect them either via USB or Thunderbolt. Make sure that the drives are both connected and that they are detected by your Mac. Once the drives are connected, you should be able to see them in the Finder window.

Step 2: Create a Disk Image

Now that the drives are connected, you need to create a disk image of the drive you want to back up. A disk image is a file that contains a copy of the entire contents of a hard drive or other storage media. To create the disk image, open the Disk Utility application on your Mac. Select the drive you want to back up and click the “Create” button. Select the size of the disk image, enter a name for the image and click the “Create” button.

Step 3: Copy the Disk Image

Once the disk image has been created, you need to copy it to the other hard drive. To do this, open the Disk Utility application again and select the drive that you want to copy the image to. Click the “Copy” button and select the disk image you just created. Enter a name for the copy and click the “Copy” button. This will create an exact copy of the original drive on the other hard drive.

Step 4: Set Up the Mirroring

Now that the disk image has been copied, you need to set up the mirroring. To do this, open the Disk Utility application again and select the drives that you want to mirror. Click the “Mirror” button and select the drives you want to mirror. Enter a name for the mirrored volume and click the “Create” button. This will create a new mirrored volume that will keep the two drives in sync.

Step 5: Verify the Mirroring

Once the mirroring is set up, you need to verify that it is working correctly. To do this, open the Disk Utility application again and select the mirrored volume. Click the “Verify” button and make sure that the status is “Verified”. This will ensure that the mirroring is working correctly and that both drives are in sync.

Conclusion

Mirroring two external hard drives on macOS can be a great way to back up your data and keep it safe. By following the steps outlined in this article, you can easily set up a mirrored volume that will keep your data in sync between two external hard drives. This will ensure that you have a reliable backup of your data in case one of the drives fails.