{"bookResponse":{"bookId":"1e3315f99020a6121c59854bd2016fe2","locale":"en_US","title":"Mac Help","meta":{"productVersion":"10.13","platformOSVersion":"10.13","icon":"https://help.apple.com/assets/58C4D6EA680CE2040551B9B2/58C4D6EC680CE2040551B9BB/en_US/937fa92677a2c49a18fa81070e5d8419.png","build_date":"Tue Oct 03 23:04:36 GMT 2017","product":"mac-help","creationDate":"Sun Mar 12 05:04:42 GMT 2017","lastModifiedDate":"Thu Oct 05 19:17:17 GMT 2017","contentType":"book","framework":"duck-10.2.12:goose-1.4.2:cuckoo-1.7.1"},"tocId":"MH43558","bookInfo":{"versions":["10.13"]},"articles":[{"articleId":{"id":"BK_1E3315F99020A6121C59854BD2016FE2_MH35860","locale":"en_US"},"meta":{"lastModifiedDate":"Thu Oct 05 19:17:17 GMT 2017","publishedDate":"Thu Oct 05 19:17:17 GMT 2017","contentType":"book","archive":"false","ownerName":"apd migration","modifiedBy":"apd migration","version":"1","unPublished":false},"content":{"main":{"title":"Back up your files with Time Machine","summary":"Use Time Machine to back up your entire Mac, including system files, apps, music, photos, emails, and documents."},"sections":[{"level":"1","text":"<body dir=\"ltr\" id=\"mh35860\" class=\"AppleTopic\"><a name=\"mh35860\"></a><figure class=\"topicIcon\"><img src=\"https://help.apple.com/assets/58C4D6EA680CE2040551B9B2/58C4D6EC680CE2040551B9BB/en_US/f9d83a15c32d0235300625ddccba68da.png\" alt=\"\" height=\"30\" width=\"30\" originalImageName=\"SharedGlobalArt/AppIconTopic_Timemachine.png\"></figure><h1>Back up your files with Time Machine</h1><p>With Time Machine, you can back up your entire Mac, including system files, apps, music, photos, emails, and documents. When Time Machine is turned on, it automatically backs up your Mac and performs hourly, daily, and weekly backups of your files.</p><p>When you use Time Machine on a computer using Apple File System (APFS), Time Machine not only keeps a copy of everything on your backup disk, it also saves <em>local snapshots</em> of files that have changed on your internal disk, so you can recover previous versions. These local snapshots are saved hourly (unless you deselect Back Up Automatically) and they&#x2019;re stored on your computer&#x2019;s internal disk.</p><div class=\"Alert\"><p class=\"Note\"><strong>Note: </strong>If you&#x2019;re using APFS, local snapshots are created on your APFS disk, regardless of whether the disk is on a portable or desktop Mac.</p></div><p>If you accidentally delete or change a file, <a href=\"https://support.apple.com/guide/?platform=mac&amp;product=mac-help&amp;vanityname=restore-items-backed-up-with-time-machine&amp;version=10.13&amp;locale=en_US&amp;topicid=MH11422&amp;type=ddm&amp;platformOSVersion=10.13\" class=\"xRef AppleTopic\">you can use Time Machine to recover it</a>.</p><figure><img src=\"https://help.apple.com/assets/58C4D6EA680CE2040551B9B2/58C4D6EC680CE2040551B9BB/en_US/f6095ab075f91220e50921c63f9c104f.png\" alt=\"When you open Time Machine, you see a blurred screen with multiple Finder screens stacked to represent backups. Click the arrows to navigate through your backups (or click in the backup timeline on the right), and choose which files to restore.\" height=\"368\" width=\"465\" originalImageName=\"Art/S0100_TimeMachine.png\"></figure><p>Even though Time Machine creates local snapshots on computers using APFS, you should also back up your files to a location other than your internal disk, such as an external hard disk, a disk on your network, or a Time Capsule. That way, if anything ever happens to your internal disk or to your Mac, you can restore your entire system to another Mac.</p><div id=\"apdb8a1489f57584\" class=\"Task no-header\"><div class=\"TaskBody\" role=\"region\" aria-hidden=\"false\" id=\"aria-apdb8a1489f57584\"><ol><li><p>Connect an external hard disk to your Mac and turn it on.</p><p>You&#x2019;re asked if you want to use the disk to back up your Mac.</p></li><li><p>Click Use As Backup Disk, then follow the instructions in Time Machine preferences.</p><p>To open Time Machine preferences, choose Apple menu&#xA0;&gt;&#xA0;System Preferences, then click Time Machine.</p><p><a href=\"x-help-action://openPrefPane?bundleId=com.apple.prefs.backup\" class=\"URL\">Open Time Machine preferences for me</a></p></li></ol></div></div><div class=\"LinkUniversal\"><strong>See also</strong><a href=\"https://support.apple.com/guide/?platform=mac&amp;product=mac-help&amp;vanityname=choose-a-backup-disk-set-encryption-options&amp;version=10.13&amp;locale=en_US&amp;topicid=MH11421&amp;type=ddm&amp;platformOSVersion=10.13\" class=\"xRef AppleTopic\">Choose a backup disk and set encryption options</a><a href=\"https://support.apple.com/guide/?platform=mac&amp;product=mac-help&amp;vanityname=disks-you-can-use-with-time-machine&amp;version=10.13&amp;locale=en_US&amp;topicid=MH15139&amp;type=ddm&amp;platformOSVersion=10.13\" class=\"xRef AppleTopic\">Disks you can use with Time Machine</a><a href=\"https://support.apple.com/guide/?platform=mac&amp;product=mac-help&amp;vanityname=start-pause-and-resume-a-time-machine-backup&amp;version=10.13&amp;locale=en_US&amp;topicid=MH19531&amp;type=ddm&amp;platformOSVersion=10.13\" class=\"xRef AppleTopic\">Start, pause, and resume a Time Machine backup</a><a href=\"https://support.apple.com/guide/?platform=mac&amp;product=mac-help&amp;vanityname=restore-items-backed-up-with-time-machine&amp;version=10.13&amp;locale=en_US&amp;topicid=MH11422&amp;type=ddm&amp;platformOSVersion=10.13\" class=\"xRef AppleTopic\">Restore items backed up with Time Machine</a><a href=\"https://support.apple.com/guide/?platform=mac&amp;product=mac-help&amp;vanityname=keep-your-time-machine-backup-disk-secure&amp;version=10.13&amp;locale=en_US&amp;topicid=MH21241&amp;type=ddm&amp;platformOSVersion=10.13\" class=\"xRef AppleTopic\">Keep your Time Machine backup disk secure</a></div></body>"}]},"categoryInfo":{"categories":["DisplayVersion/macOS High 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