how to downgrade mac os high sierra to sierra

So if you want rid of the beta OS, it’s a simple case of deleting the partition. Then run the stable OS for your day-to-day work, and the beta OS in the partition. Really, if you are going to try beta software, the best option is to partition your hard drive. Then all future High Sierra updates will be pushed out to you when they become available. Once the official High Sierra comes out, you can then overwrite the beta version with the official version using the App Store method shown above.

The official High Sierra will be out, and you will be stuck on a previous beta release (if you switched off the beta releases in System Preferences). Going Back To The Sierra & High Sierra ProblemĪssuming you decided not to wipe your system and wait instead for the official release of High Sierra, you will be in a unique situation. It might be best to go and do something else in the meantime. When you’ve done all of that, click “ Open” and let the Mac do its thing.

Shut down all other open applications to speed up the rebooting process.

Move ALL important files off the Mac and into cloud storage or a removable hard drive.

Move it into cloud storage or a removable hard drive.

Save any unfinished work and close the files.

Quit Disk Utility when the process is done. Rename the USB drive as 'MyVolume' and choose APFS or Mac OS Extended as the format, click Erase.

Plug an external USB drive (with 16GB min), launch Disk Utility, and select the USB drive, click Erase. Now before you start downgrading your operating system, you need to take some precautions. Downgrade macOS (e.g: Downgrade macOS Mojave to High Sierra) 1. Once it is finished, that “ Downloading” button will change to an Open button.

How to downgrade mac os high sierra to sierra