古いMacでは「macOS High Sierra」のサポート対象外となり、macOS High Sierraをインストール出来ないMacがあります。 ワタシの使っているiMac「 iMac Early 2008 」も、「macOS High Sierra」のサポート対象外となっています。. High Sierra is an update of MacOS which focuses mostly on back-end developments and a higher level of user security. As such, this operating system lays a foundation for future upgrades. The App Store only shows updates for the OS you are using at the moment, in your case Yosemite 10.10.5. If you want to go to another newer OS that is called an upgrade. This can be done through the App Store using the following link. How to upgrade to macOS High Sierra - Apple Support. High Sierra is the last/ newest OS your Mac can use. Many Mac users who are attempting to download macOS High Sierra from the Mac App Store will find that a small 19 MB version of “Install macOS High Sierra.app” downloads to the /Applications folder of the target Mac, rather than the complete 5.2 GB Installer application for macOS High Sierra. This is annoying because it prevents a single.

Is your Mac up to date with the latest version of the Mac operating system? Is it using the version required by some product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.

If your macOS isn't up to date, you may be able to update to a later version.

Which macOS version is installed?

From the Apple menu  in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Big Sur, followed by its version number. If you need to know the build number as well, click the version number to see it.

Which macOS version is the latest?

MacOS High Sierra; macOS Sierra; OS X El Capitan; OS X Yosemite; OS X Mavericks; OS X Mountain Lion; Mac OS X v10.7 Lion; Mac OS X v10.6 Snow Leopard; Mac OS X v10.5 Leopard; Mac OS X v10.4 Tiger; Mac OS X v10.3 and earlier; Mac OS X Technologies; Classic Mac OS (OS9, OS8 & System 7) Photos for Mac; QuickTime; Safari; Front Row.

These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Big Sur. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.

Update Mac Os X 10.6 8 To High Sierra

Increased security

High Sierra is an update of MacOS which focuses mostly on back-end developments and a higher level of user security. As such, this operating system lays a foundation for future upgrades.

Stay safe

In essence, High Sierra took what was good with Sierra and developed it into a more comprehensive software.

High Sierra emphasizes the already-existing benefits of MacOS previous system, Sierra. There are few bells and whistles, but the changes are noticeable and positive. The Apple file system is the most significant feature it brought. It enables the storage and encryption of a large number of files. Thus, it boosts performance and helps manage device memory issues.

Apple also introduced new formats for video and photos in this version. These formats compress data - that’s a benefit as files can get huge with ever-rising resolutions. They added support for virtual reality headsets as well.

Besides that, when it comes to Safari, Mac search engine, there are some notable improvements with the update. The users can now control annoying auto-play videos, prevent tracking, and more. There are also notification controls, and you will experience a boost in performance, too.

The most noticeable changes took place in Apple’s Photo App, though. It went through a total revamp both visually in its interface and terms of tools and functions available. Many other discreet changes happened all over the system.

Where can you run this program?

If you’re running Sierra on your Mac, you will be able to run this one as well.

Is there a better alternative?

How To Update Mac Os To High Sierra

Yes. Mojave, the newest version of MacOS, brought even more improved features to the table. However, if you can’t run it on your device, this is the second best.

Our take

High Sierra is not the shiniest upgrade Apple brought, but it’s one that sets the stage for new upgrades to come. Even out of that context, it’s a great operating system.

Update Mac Os X 10.5.8 To High Sierra

Should you download it?

Yes, if your device can support it. The new options and better security settings are worth getting.

Highs

• Improved storage
• Smaller image and video sizes
• Handy Safari updates
• Upgraded security

Lows

• Apps require updates for compatibility
• Siri produces questionable results

macOS High Sierrafor Mac

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