Nov 29, 2017  STEP 3. Install older OS X onto an external drive. The following method allows you to download Mac OS X Lion, Mountain Lion, and Mavericks. Start your Mac holding down Command + R. Prepare a clean external drive (at least 10 GB of storage). Within OS X Utilities, choose Reinstall OS X. Select external drive as a source. Enter your Apple ID.

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Is your Mac up to date with the latest version of the Mac operating system (macOS or OS X)? Is it using the version required by some product or feature? Which versions are earlier (older) or later (newer, more recent) than the version currently installed? 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?

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From the Apple menu  in the corner of your screen, choose About This Mac. You'll see the macOS name, such as macOS Mojave, followed by its version number. If some product or feature requires you to know the build number as well, click the version number to see it.

This example shows macOS Catalina version 10.15 build 19A583.

Which macOS version is the latest?

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 Catalina. And 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 installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.

Learn more

• Always use the macOS that came with your Mac, or a compatible newer version.
• Learn how to reinstall macOS from macOS Recovery.

macOS is the operating system that powers every Mac. It lets you do things you simply can’t do with other computers. That’s because it’s designed specifically for the hardware it runs on — and vice versa. macOS comes with an entire suite of beautifully designed apps. It works hand in hand with iCloud to keep photos, documents and other stuff up to date on all your devices. It makes your Mac work like magic with your iPhone and other Apple devices. And it’s been built from the ground up with privacy and security in mind.

Featuring all-new, dedicated apps for music, TV and podcasts. Smart new features in the apps you use every day. And Sidecar, which lets you use iPad as a second Mac display.

Easy to Use
When it’s simple to do everything, you can do anything.

On a Mac, everything is designed to work just the way you expect it to — from operating it with simple, intuitive gestures to asking Siri to find a file to having your apps automatically update themselves. Whatever you set out to do on a Mac, there’s much less to learn and that much more to accomplish.

The Finder lets you easily browse and organise the files on your Mac — and those stored in iCloud Drive. View files by icons, in a list or with Gallery View, which helps you quickly locate a file by how it looks. Drag and drop files into folders in the sidebar. And use the Preview pane to see all your files’ metadata, quickly create .zip files, and share using the handy Share menu.

Dark Mode adds a dramatic look to your desktop and apps that puts the focus on your content. Dynamic Desktop makes your Mac even more beautiful with time-shifting desktop pictures that match the time of day wherever you are. And Stacks keeps your desktop free of clutter by automatically organising your files, images, documents, PDFs and more into tidy groups.

Spotlight helps you quickly and effortlessly find what you want, like documents on your Mac, film showtimes, and flight departure and arrival times. Just type a few keystrokes in the Spotlight search field and auto-complete immediately shows you relevant results.¹

A simple two-finger swipe from the right edge of your trackpad brings up Notification Centre — the same one you use on iPhone — where you can see all the alerts that have come in recently. It’s also where you’ll find your Today view, which you can customise with helpful widgets or handy information pinned from Siri searches.

Siri helps you get things done just by using your voice. It also helps you get more things done at the same time. So you can finish your document while asking Siri to tell your co-worker that it’s on the way. Looking for the presentation you worked on last week? Just ask Siri.² And with Apple Music, Siri can be your personal DJ and recommend music based on your tastes, and tell you more about songs, albums and artists.³

Continuity All your devices.
One seamless experience.

Your Mac works with your other Apple devices in ways no other computer can. If you get a call on your iPhone, you can take it on your Mac. And when friends text you — regardless of the phone they have — you can respond from your Mac, iPad or iPhone, whichever is closest. When you copy text or an image from one device, you can paste it into another with standard copy and paste commands. And with Sidecar, you can extend your workspace by using your iPad as a second Mac display. You can even unlock your Mac with your Apple Watch. No password typing required.

Privacy and Security We believe your data belongs to you. Period.

Everything you do with your Mac is protected by strong privacy and security features. That’s because we build data security into everything we make, right from the start.

Privacy. You trust our products with your most personal information, and we believe you should be in complete control of it. We respect your privacy by enacting strict policies that govern how all data is handled. And when you browse the web, Safari helps prevent data companies from tracking the sites you visit.

Security. We design Mac hardware and software with advanced technologies that work together to help you run apps safely, protect your data and keep you safe on the web. The new Find My app helps you locate a missing Mac that’s lost or stolen — even if it’s offline or sleeping. And Gatekeeper makes it safer to download and install apps from the Mac App Store and the internet.

Built-in Apps Apps as powerful and elegant as your Mac. Because they’re designed for it.

With every Mac, you get a collection of powerful apps. They’re the same apps you use on your iPhone or iPad, so they’ll feel instantly familiar. They all work with iCloud, so your schedule, contacts and notes are always up to date everywhere. And because they’re native apps — not web apps in a browser — they take full advantage of the power of your Mac to deliver the fastest possible performance and more robust features.

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Media. Experience music, TV and podcasts in three all-new Mac apps. Get all the news that matters from sources you trust, all in one place.⁴ Track the market and customise your watchlist. Peruse the best book titles from your desktop. And find the latest apps and extensions for your Mac, right on your Mac.

• Podcasts

• Stocks

• App Store

  The I/O Kit simplifies driver development and supports many categories of devices. Although writing drivers for OS X requires new ways of thinking and different ways of programming, you are amply rewarded for shifting to this new approach. Once you get the basics of the I/O Kit down, you’ll find it a relatively easy and efficient matter to create device drivers.Before you attempt driver development with the I/O Kit, Apple highly recommends certain prerequisites.

Creativity. Enjoy your best photos and videos, showcased in an immersive, dynamic new look. Transform home videos into unforgettable movies or quickly share clips with your favourite people. Create music like the pros with a huge collection of sounds, instruments, amps, and a lineup of virtual session drummers and percussionists perfectly suited to play along with your song.

Productivity. Create beautiful documents with stunning simplicity. Visualise your data precisely and persuasively in spreadsheets with images, text and shapes. Make stage-worthy presentations using powerful graphics tools and dazzling cinematic effects to bring your ideas to life. And collaborate with friends and co-workers in real time — whether they’re across town or across the globe.

Communication. Easily manage all your email accounts in one simple, powerful app that works with email services like iCloud, Gmail, Yahoo, AOL and Microsoft Exchange. Send unlimited messages to anyone on any Apple device, using the same Messages app on your Mac as you do on your iPhone. Make unlimited high-quality video and audio calls straight from your Mac with FaceTime. And securely locate a missing Mac using the new Find My app on Mac, iPhone and iPad.

Organisation. A new gallery view and more powerful search help you find your notes more quickly than ever. Easily create, organise and add attachments to reminders. Manage your iCloud, Google and Exchange calendars in one place, create separate calendars for home, work and school, and view them all or just the ones you want. Instantly capture personal reminders, lectures, even interviews or song ideas with Voice Memos. Keep all your contact info up to date on all your devices, and easily import numbers, addresses and photos from Google and Microsoft Exchange. And control all your HomeKit-enabled accessories from the comfort of your desktop.

• Notes

• Reminders

• Calendar

  Possibility to control content, change the format of tags, and make various templates from other ZebraDesigner Pro features. Also, the configuration and troubleshooting of printers will simply be underneath the user’s fingers. Zebradesigner for mac os x. Builds from most hardware, from desktop printers to industrial printers.The existence of a powerful tool, as well as a tool for producing RFID tags, can make labels with constant and variable information.

• Voice Memos

• Contacts

Internet. Surf the web seamlessly with an updated start page that helps you quickly access your favourite and frequently visited sites. Use Apple Pay to make purchases on the web in Safari with Touch ID on MacBook Pro and MacBook Air. Map out new destinations from your desktop with gorgeous 3D city views like Flyover, point-to-point directions and comprehensive public transport directions. And instantly search your entire Mac or get results from the internet in just a few keystrokes.

iCloud All your stuff on your Mac.
And everywhere else you want it.

Every Apple app uses iCloud — it’s the magic behind the seamless experience you have with all your Apple devices. So you always have your photos, videos, documents, email, notes, contacts, calendars and more on whatever device you’re using. And any file you store in iCloud Drive can be shared with friends, family and colleagues just by sending them a link. iCloud Drive also lets you access files from your Mac on your iPhone or iPad. It’s all done automatically. Just like that.⁵

Accessibility We make sure that everyone is able to use a Mac.

macOS comes as standard with a wide range of assistive technologies that help people with disabilities experience what Mac has to offer, providing many features you won’t find in other operating systems. Voice Control lets users control their Mac, iPad and iPhone entirely with their voice. And features such as VoiceOver, Accessibility Keyboard, FaceTime⁶ and Text to Speech help everyone get more out of Mac.

Technology Advanced to the core.

macOS features powerful core technologies engineered for the most important functions of your Mac. Thanks to Mac Catalyst, you can now enjoy your favourite iPad apps on your Mac. With SwiftUI, developers have a simple way to build better apps across all Apple platforms with less code. Create ML gives developers a faster and easier way to build machine learning into apps. And support for virtual and augmented reality lets developers create immersive worlds for you to step into.

Compatibility Need to work with Windows?
Mac does that too.

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With macOS, it’s easy to transfer your files, photos and other data from a Windows PC to your Mac. Work with popular file types such as JPEG, MP3 and PDF, as well as Microsoft Word, Excel and PowerPoint documents. And, of course, you can run Microsoft Office natively on a Mac. If you want, you can even run Windows on your Mac.⁷