The second method takes a few steps longer to set up, but  your backup will be bootable. But it will get your computer back to what it was like the hour before it crashed! This process can take hours – not good if you are just heading out the door and need a file.  So if your computer crashes you need to insert the original DVD and restore from the Time Machine backup. The big disadvantage  is that the backup is not bootable. It doesn’t rely on you remembering to do anything.
Look here.Īpple’s way (Time Machine) is a lot simpler. If you are a beginner I recommend Time Machine. Manually backup your computer with some other software such as Super Duper or Carbon Copy Cloner. But just to reiterate: CCC can clone your High Sierra SSD to an SSD or an HDD that is formatted as either HFS or APFS. I hope that chart goes a long way toward relieving concerns about what is an acceptable source and destination format for your High Sierra backups. Once erased, the installer will perform a clean install of High Sierra on your drive (just make sure to back up before performing a clean install!).
The Mac will now boot to the High Sierra installer and, because it is running off of the USB drive, it can access and erase your Mac’s internal drive. To see storage information about your Mac, click the Apple menu in. How much space do I need for a backup? To see the size of a specific file or folder, click it once and then press Command-I.
Use Time Machine to automatically backup. There are two main ways to backup your Apple computer.ġ.
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