WD My Passport For Mac (Best Overall) The Western Digital 2TB My Passport For Mac is the perfect. LaCie Mobile Drive. Backups Made Easy. What is one of the most common uses for an external. To see the size of a specific file or folder, click it once and then press Command-I. To see storage information about your Mac, click the Apple menu in the top-left of your screen. Choose About This Mac and click the Storage tab. For Time Machine backups, it's good to use a drive that has at least twice the storage capacity of your Mac.

Backing up your Mac is simple and important. We recommend it for everyone.

Back up with Time Machine

Western Digital My Passport 4TB. The overall best external hard drive for Mac or PC.

Time Machine is the built-in backup feature of your Mac. It’s a complete backup solution, but you can use other backup methods as well.

Create a backup

Store files in iCloud

You can also use iCloud and iCloud Drive to store files, such as your photos, documents, and music.

Set up iCloud and iCloud Drive Mac

Restore your Mac from a backup

When you have a backup, you can use it to restore your files at any time, including after the original files are deleted from your Mac.

Restore from a backup

Prepare your Mac for service

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Making a backup is an important part of preparing your Mac for service, especially because some types of repair might require erasing or replacing your hard drive.

Get your Mac ready for service

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. To see storage information about your Mac, click the Apple menu in the top-left of your screen. Choose About This Mac and click the Storage tab. For Time Machine backups, it's good to use a drive that has at least twice the storage capacity of your Mac.

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If you can't back up your Mac

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