HOWTO |Duplicate a drive using Carbon Copy Cloner
1 Select your backups
Download Carbon Copy Cloner from bombich.com, unpack and launch it, then work your way from left to right across the opening screen. Start by clicking the Source box and select the drive (or folder) you want to copy. Ideally this would be your internal hard drive (ours is Macintosh HD).
2 Set the destination
Click the Destination box and pick the backup destination. This should be an external drive attached to your Mac that you can move offsite when complete. But you can use another folder or, if you select New Disk Image, a NAS drive attached to your network.
3 Get automated
Click in the Schedule box and decide when you want to run the backup. Scheduling makes it easier to remember, but if you’re happy to take responsibility for this yourself, leave it set to ‘Do not run this task on a schedule’ and simply click Clone to perform the backup.