- Mac running OS X 10.3 or later with plenty of hard disk space Econ Technologies ChronoSync 3.3.4 ($30) or an alternative (see “Backup Options”) Apple AirPort Extreme card ($49) or Ethernet.
- Acronis is a name well known in the Windows world, but less so to Mac users. True Image is its personal backup solution and it supports backing up your data to a local disk, Acronis' own cloud.
- Restore From Time Machine Backup: Restore your Mac from a Time Machine backup. Reinstall macOS: Download and reinstall the Mac operating system. Get Help Online: Use Safari to browse the web and find help for your Mac. Links to Apple's support website are.
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Backing up your Mac is simple and important. We recommend it for everyone.
Back up with Time Machine
Restore From Time Machine Backup: Restore your Mac from a Time Machine backup. Reinstall macOS: Download and reinstall the Mac operating system. Get Help Online: Use Safari to browse the web and find help for your Mac. Links to Apple's support website are included. Browser plug-ins and extensions are disabled.
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 backupStore 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 DriveRestore 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 backupPrepare your Mac for service
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 serviceHow 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.
Related topics
Free up storage on your Mac
macOS can save space by storing your content in the cloud. This isn't a backup, but it includes new tools to make it easier to find and remove large or unwanted files before you make a backup.
Use Optimized Storage in macOSErase or format a storage device
How to format usb for mac os x. Os x 10.6 download. You can use Disk Utility if you need to erase or format a storage device.
Learn how to use Disk UtilitymacOS Community
If you can't back up your Mac
We'll find the best support options for you.
Apple's built-in backup program for the Mac, Time Machine, makes it incredibly easy to back up all of your important data so you can restore your computer if something should happen. You can even recover deleted files if you accidentally lose them.
On Apple laptops, like the MacBook, MacBook Air, and MacBook Pro, Time Machine includes the added feature of creating local snapshots so that, if you disconnect your MacBook from its external hard drive, you'll still have backups stored on your internal hard drive so you can recover data if you need to.
Local snapshots are invaluable for certain situations when you're out and about and need to recover data but don't have your backup hard drive. They also, eventually, start taking up noticeable space on your hard drive.
Why do I have 100 GB of backups on my hard drive?
You need an external hard drive in order to set up and use Time Machine because that's where your backups are stored. Kindle ebook reader for mac os x. So why do you have a large number of backups taking up space on your MacBook's internal hard drive? Because of local snapshots.
As soon as you set up Time Machine on your Mac laptop, local snapshots are created automatically. Time Machine makes one daily snapshot every 24 hours when you start up your MacBook and also stores weekly snapshots. It keeps those weekly snapshots on your internal hard drive until you start to get low on storage. So, if you've been backing up your Mac for years with Time Machine, you could potentially have 100 GB of backups stored in your internal hard drive, as long as you have space for them.
How do I get rid of all these backups?
First, let me preface this by saying that you shouldn't worry about those backups and all the space they are taking up. If everything is working properly, Time Machine will automatically delete the oldest snapshot backups as soon as your internal hard drive has less than 20% of storage space left. If you then, say, download some large program and your internal hard drive plummets to below 10% (or less than 5GB of internal storage), Time Machine will delete all local snapshots except the most recent. The program will then continue to replace the old snapshot with a new one until you free up space on your Mac's internal storage, at which point it will go back to saving weekly snapshots as long as space permits.
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That being said, everything doesn't always work properly and you may find yourself out of storage space on your internal hard drive, and those snapshot backups just won't go away. If you really need to delete those snapshots (which I don't recommend unless you desperately need that space), there is a way to purge local snapshots from your internal hard drive. You can use a Terminal command that will disable Time Machine's local snapshot feature, which will delete all of the local snapshots on your internal hard drive. It will also stop Time Machine from creating new snapshots.
To disable local snapshots in Time Machine and remove them from your internal storage:
- Open Time Machine Preferences from the Time Machine menu in the menu bar on your Mac.
- Uncheck Back Up Automatically.
- Wait a few minutes for the local snapshots to delete.
- Check Back Up Automatically again.Source: iMore
Any questions?
Before you decide to purge your local snapshots, be sure you really need to do this. Time Machine should work automatically to remove older backups as you need the storage space on your internal hard drive. If you delete old backups, you can never retrieve data from them if something were to go wrong while you aren't connected to your backup hard drive. If you have any questions about local snapshots, drop them in the comments, and I'll help you out.
Updated March 2020: Adjusted steps for macOS Catalina.
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