The problem is, if you ever have to go back to High Sierra, that new library is not accessible. Going to Catalina, the Photos app 'upgraded' the entire Photos library. When Apple releases new OS versions, they also might include upgrades to some applications and their data that many users take for granted. The things I think casual users need to know are the following: The patcher is a great tool, and provides fairly easy access to the later MacOS versions. Having issues? See our macOS 10.It's probably way late to chime in on this subject, but just in case you have not gone to the unsupported MacOS, here are some hard learned lessons.From there, all you have to do is select the disk you want to install the OS on (we recommend an SSD to take advantage of the new Apple File System) and the process of installing macOS 10.13 High Sierra will begin. Once macOS 10.13 High Sierra has been downloaded in its entirety, a new window will open prompting you to agree to Apple’s terms and conditions. Even so, macOS 10.13 High Sierra is only compatible with Macs and MacBooks running at least OS X 10.8.

Of course, like all version of macOS (and OS X before it), macOS High Sierra can be downloaded and installed completely free of charge. Though, for users with data caps to worry about, it’s notably 4.8GB in size. The download itself should only take a couple of minutes on a broadband network connection. Otherwise, you can start downloading the consumer release of macOS High Sierra here (opens in new tab) from the App Store. If you really want to test-drive new builds before they’re seeded to everyone else, you can sign up right here (opens in new tab). Of course, the macOS 10.13 High Sierra Public Beta is still available despite the final stable edition having already been released. How to enroll in the Apple Beta Software Program You can also download the macOS High Sierra 10.13.1 update from Apple's support site (opens in new tab). Make sure you've saved your files, and backed up any irreplaceable files, then click on 'Update'. From the App Store, click on the 'Updates' tab, and you should see 'macOS 10.13.1 Update 10.13.1' listed. To do this from within macOS High Sierra, click on the Apple menu and select 'App Store'. With the updated macOS High Sierra 10.13.1 now available to download, bringing bug fixes, extra stability and security features, we recommend downloading and installing that update as soon as possible. How to download macOS High Sierra 10.13.1

How to update my mac to high sierra