Bottom line: you’re about to wipe your Mac’s startup drive, backup anything you want to keep. If you use Apple’s Photos app and don’t use iCloud Photo Library, make sure you manually export any photos you’ve imported or worked on since you upgraded to a separate drive. Dropshare, also available in Setapp, makes it easy to mount cloud storage services on your Mac’s desktop so you can drag files to them.
That backup could be via Time Machine, or to an external drive (not the same one you used for the first backup) using Get Backup Pro, or to a cloud storage service, if there are only a few files. In addition to making a backup or a clone of your startup drive before you upgrade, you should backup any files and documents you’ve worked on since you upgraded, before you downgrade. And you can also use ChronoSync Express, again, in Setapp, to back up your data. Disk Drill, also in Setapp, can make a disk image of your drive – making a byte-by-byte copy. If you don’t want to use Time Machine, Get BackUp Pro, available in Setapp, can clone your Mac’s startup drive, protecting you if something goes wrong. The easiest way to do this is to use Apple’s Time Machine to back up to an external disk, either directly connected to your Mac or on a network – if you’re running macOS Sierra, that network disk can be SMB earlier versions of macOS only support AFP.Īs a bonus, the easiest way to downgrade from a new version of macOS is to restore from a Time Machine backup.
Downgrade os mac sierra from high upgrade#
Start to downgrade from macOS High SierraĪs with any major change you make to your Mac, you should always back it up before you upgrade the OS. For the strongest security and latest features, find out whether you can upgrade to macOS Big Sur, the latest version of macOS.Īdd to that the fact that older versions of many apps simply stop working when the OS is upgraded, and others start having problems, and there are several reasons you might want to downgrade to an earlier version from macOS High Sierra. And it can take several weeks for them to be fixed. Many of the bugs in a new OS version only become apparent after release, despite months of public beta testing.
Most of the time, that’s not a problem, but occasionally it can cause problems.
Downgrade os mac sierra from high install#
If you don’t already have a bootable installer of Sierra, you’ll have to downgrade to El Capitan or earlier.Īpple’s strategy of making macOS upgrades free to download from the App Store means that many of us install a new version as soon as it’s available. El Capitan, Yosemite and earlier versions are still available to download in the Purchased tab.
Note: While Apple has removed the macOS Sierra installer from the Mac App Store.
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