Some factors may cause the error and fail messages while you cloning a hard drive via Disk Utility:
- There's drive manufacturer's software on the drive
- The format of the source disk and target disk is not the same
- The target disk doesn't have a larger capacity than the source disk
I recommend iBoysoft DiskGeeker, a professional disk management tool, for cloning a hard drive to another, you can free download this software to complete the hard drive cloning.
Simple steps to clone your external hard drive to another:
Note: Make a backup of your target disk as the clone will overwrite the data on it.
- Connect your Passport external hard drive and Easy Store hard drive to your Mac and launch iBoysoft DiskGeeker.
- Select the source disk (Passport external hard drive) at the left sidebar of the iBoysoft DiskGeeker window.
- Click "Clone" from the right toolbar.
- Choose a destination drive(Easy Store hard drive) from the pop-up list and click startClone.
