Mac macOS (10.5 and above) has an excellent built-in backup tool called Time Machine. Once you plug in a hard drive and set up Time Machine, it will work automatically in the background, continuously saving copies of all your files, applications, and system files (i.e., most everything except for the stuff you likely don’t need to back up. Time Machine was first introduced with macOS 10.5 Leopard in 2007 and has been included in every version of the OS since. This guide will illustrate a backup using macOS 10.14 Mojave, but the process is similar across macOS versions. If you connect a disk formatted for Windows, it can be reformatted (permanently removing all data) to a Mac format and used as a backup disk. The most common format for a Time Machine backup disk is Mac OS Extended format (Journaled) format, but Time Machine also supports Mac OS Extended (Case-sensitive, Journaled) and Xsan formats. Time Machine is a most excellent backup system that was introduced with OS X Leopard — and OS X Mavericks has only made it better. It’s a system because it consists of two parts: the Time Machine System Preference pane and the Time Machine application. To use Time Machine to back up your data automatically,.
- Does Time Machine Backup Mac Os
- How To Back Up My Mac
- How To Set Up Time Machine
- Time Machine Backup Mac Os
To use Time Machine to make a backup of your Mac, you need any of these types of storage devices:
- External drive connected to an AirPort Extreme Base Station (802.11ac) or AirPort Time Capsule
After setting up the storage device, you can use Time Machine to make a backup of your Mac. And after making your backup, you can use Time Machine to restore files from your backup.
External drive connected to your Mac
Time Machine can back up to an external drive connected to a USB, Thunderbolt, or FireWire port on your Mac.
External drive connected to an AirPort Extreme Base Station (802.11ac) or AirPort Time Capsule
Time Machine can back up to an external USB drive connected to an AirPort Extreme Base Station (802.11ac model) or AirPort Time Capsule.
- Make sure that the USB drive is formatted for Time Machine.
- Connect the drive to a USB port on your AirPort base station, then turn it on.
- Open AirPort Utility, then select your base station and click Edit to view its settings.
- Click the Disks tab in the settings window.
- Select your backup disk from the list of partitions, then select ”Enable file sharing”:
- If more than one user on your network will back up to this disk with Time Machine, you can use the Secure Shared Disks pop-up menu to make sure that they can view only their own backups, not yours. Choose ”With accounts” from the menu, then click the Add (+) button to add users.
- Click Update to restart your base station and apply the settings.
AirPort Time Capsule
Time Machine can back up to the built-in hard disk of an AirPort Time Capsule on your network.
Does Time Machine Backup Mac Os
Mac shared as a Time Machine backup destination
To use another Mac on your network as a Time Machine backup destination, complete these steps on the other Mac:
- Choose Apple menu > System Preferences, then click Sharing.
- From the list of services on the left, select File Sharing.
- From the list of Shared Folders on the right, Control-click the folder that you want to use for Time Machine backups.
- From the shortcut menu that opens, choose Advanced Options.
- From the Advanced Options dialog, select ”Share as a Time Machine backup destination.”
When setting up Time Machine on your other Mac computers, you should now be able to select the shared folder as a backup disk.
Network-attached storage (NAS) device that supports Time Machine over SMB
Many third-party NAS devices support Time Machine over SMB. For details, check the documentation for your NAS device.
How to format a disk for Time Machine
Time Machine supports all Mac OS Extended (Journaled) formats and Xsan formats. If the disk isn't using the correct format, Time Machine automatically prompts you to erase it when you connect it to your Mac:
If you need to erase the disk manually, use the Disk Utility app to erase using the Mac OS Extended (Journaled) format.
Time Machine can't back up to an iOS device or disk formatted for Windows. And if your disk uses the Master Boot Record (MBR) partition scheme, some of its partitions might not be available for use with Time Machine.
If you used Time Machine to create a backup of your Mac, you can restore your files from that backup or a local snapshot on your startup disk. You might want to restore your files after the originals were deleted from your Mac, or the hard disk (or SSD) in your Mac was erased or replaced, such as during a repair.
Restore from a Time Machine backup
When you restore from a Time Machine backup, you can choose to restore all your files, or restore both the Mac operating system (macOS) and all your files.
Restore all your files
- Make sure that your Time Machine backup disk is connected to your Mac and turned on. Then turn on your Mac.
- Open Migration Assistant, which in the Utilities folder of your Applications folder.
- If your Mac starts up to a setup assistant, which asks for details like your country, keyboard, and network, just continue to the next step. The setup assistant includes a migration assistant.
- If your Mac doesn't start up all the way, or you also want to restore the macOS you were using when you created the backup, follow the steps to restore both macOS and your files.
- When you're asked how you want to transfer your information, select the option to transfer from a Mac, Time Machine backup, or startup disk. Then click Continue.
- Select your Time Machine backup, then click Continue.
- If you're asked to choose from a list of backups organized by date and time, choose a backup and click Continue.
- Select the information to transfer, then click Continue to start the transfer. This screen might look different on your Mac:
- If you have a lot of content, the transfer might take several hours to finish. When the transfer is complete, restart your Mac and log in to the migrated account to see its files.
Restore both macOS and your files
These steps erase your hard disk, then use your backup to restore both your files and the specific version of macOS you were using when you created the backup.
- Make sure that your Time Machine backup disk is connected and turned on.
If your backup disk isn't available, keep going: You might be able to restore from a local snapshot on your startup disk. - Turn on your Mac, then immediately press and hold Command (⌘)-R to start up from macOS Recovery. Release the keys when you see the Apple logo or spinning globe.
- When you see the macOS Utilities window, choose the option to restore from a Time Machine Backup.
- Click Continue until you're asked to select a restore source, then select your Time Machine backup disk. Or select your startup disk (Macintosh HD), which might have a local snapshot you can restore from.
- Click Continue. If your disk is encrypted, you're asked to unlock the disk: Enter the administrator password you used when setting up Time Machine, then click Continue again.
- Select a backup, if available, then click Continue.
- Select a destination disk, which will receive the contents of your backup. If restoring from a local snapshot, you aren't asked to select a destination.
- Click Restore or Continue. If your Mac has FileVault turned on, you're asked to enter your administrator password to unlock the disk.
- When done, restart your Mac.
Restore specific files
How To Back Up My Mac
Learn how to use Time Machine to restore specific files, including older versions of your files.
How To Set Up Time Machine
Learn more
Time Machine Backup Mac Os
- What to do if you can't restore with Time Machine. If you need help, contact Apple Support.