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Chose Macintosh HD and press the Restore button.Īllow the process to complete successfully. LIII.Ĝlick Edit menu and then click Restore Select the external hard drive in Disk Utility panel Connect an external storage drive to Mac and launch Disk Utility Steps to clone Mac or iMac or MacBook to External Drive: With Disk Utility, you can create a clone, and to do so all you need is an external drive greater than or equal the size of your Mac’s start-up disk. The Disk Utility tool is a native hard drive management software provided by macOS. When your Mac is lost, stolen, or damaged.ģ Methods to Backup Mac or MacBook to External Hard Drive.When your Mac storage drive turns corrupt or fails.When your Mac is infected with malware.When you erase/format your storage drive.When you delete important files permanently.To access data from any system through the backup device.īackup acts as a saviour in the following situations:.To restore an older version of the data.To restore data from backup in case the original data gets deleted or corrupt.

Stay tuned for the best backup and data recovery techniques for macOS. In this example, the internal drive is 250GB and just over 20GB are being used.This article shares the essence of Mac backup and explains the different methods to back up Mac hard drive data to an external storage drive. You should see a window like the one below.

To find out how large your internal drive is and how much space is being used and how much is available, click on the internal drive icon on the desktop (often it's named "Macintosh HD") and then click the Command and "I" button at the same time to "Get Info". With a 1TB drive (1000GB), there would always be plenty of room for backups. So a 500GB drive could backup to another 500GB drive, but as the amount of data on the drive increased, there would be less room for backups on the external drive. However, keep in mind the amount of data on the drive can easily increase so I just go by a rule of thumb and get a backup drive that is at least twice as large as the drive capacity of the drive you are backing up. For instance, if your internal hard drive is 500GB and you are using 250GB of on the drive, the minimum size drive you'd want to backup to is a 500GB drive.

Generally you want a drive that is at least twice as large as the amount of data you are backing up. Time Machine works great with external USB or Firewire hard drives. The first thing you'll need to use Time Machine to backup your Mac is a second hard drive.