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. If you use Dropbox, Google Drive or another cloud service that syncs automatically with a folder on your Mac, make sure it synchronizes just before you start the downgrade.
If you have a bootable installer, say on a USB stick, of the version of macOS you want to revert to, you can use that to downgrade from High Sierra.
Tip: Backup Mac data before downgrading macOS or Mac OS X
So you can make bootable installers for El Capitan and downgrade to that version. To reinstall macOS follow these steps:. Restart your Mac, holding down the Command and R keys until you see the Apple logo. Click Continue. Choose the last backup before you upgraded to macOS High Sierra. Wait for your Mac to restart. Navigate to the most recent backup and to the files and folders you want to restore and use Time Machine to retrieve them.
If you used GetBackup Pro or another backup tool to backup your High Sierra disk, use its restore facility to retrieve files. Manually copy any other files from cloud storage or an external disk. To get apps from Setapp, download the Setapp desktop app and sign into your account. Then install other apps from there. How to downgrade without a Time Machine backup If you have a bootable installer, say on a USB stick, of the version of macOS you want to revert to, you can use that to downgrade from High Sierra.
How to downgrade to an earlier version of macOS - opacorylav.ml
To reinstall macOS follow these steps: Plug the new bootable installer into your Mac. Restart your Mac, holding the Alt key and, when you see the option, choose the bootable install disk. Launch Disk Utility, click on the disk with High Sierra on it the disk, not just the volume and click the Erase tab. Click Erase. When the disk has been erased, restart by holding down Command-R and wait for the macOS Utilities window to appear. Follow the onscreen instructions and wait for your Mac to restart. Lastly, you would be far better off fixing what's wrong with your Mac than to downgrade to an earlier operating system.
Downgrade macOS/Mac OS X without Losing Data 12222 (Mojave Applicable)
If you want to do that, and I strongly suggest you do, please write back for instructions. Posted on Feb 20, AM.
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- How to Downgrade from macOS High Sierra to an Older Version?
- How to Downgrade macOS High Sierra.
- Method 1. Downgrade macOS or Mac OS X with Time Machine.
If you have a Time Machine backup that predates the upgrade you can restore from that. You will lose any data you have created since the update.
- Using a Time Machine backup.
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Install or revert to a prior version of Java - Mac OS X
Mac OS X Speciality level out of ten: 0. Mac OS X Speciality level out of ten: 1. You will need a viable Internet connection, preferably a fast one, and one that does not require a "login screen" for you to connect to the Internet. If you do not boot Internet Recovery, you will boot into the existing Recovery Partition, which will only allow you to reinstall your existing operating system. Then, select Disk Utility to completely erase your startup volume.