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Is your Mac up to date with the latest version of the Mac operating system? Is it using the version required by a 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?

Which Intel Macs have 64-bit processors? Which have a 64-bit EFI? Which are capable of booting MacOS X 10.6 'Snow Leopard' in 64-bit mode? With the exception of the 'Mid-2010' Mac Pro models, Intel Macs boot Snow Leopard in 32-bit mode by default, and it's a bit complicated to sort out which Macs really are capable of booting MacOS X 10.6 'Snow Leopard' in 64-bit mode. Mac OS 9 improved wireless networking support, and introduced Remote Networking, on-the-fly file encryption, and an early version of multi-user support. Mac OS 9 ended the era of “classic” Mac OS, passing features along to Mac OS X (X being the Roman numeral for 10), and the modern macOS. MacOS has been 64-bit and 32-bit since 2005, and generally speaking if you purchased a new Mac in 2007 or later, its processor is 64-bit. How to See if Your Mac’s Processor is 32-bit or 64-bit. Mac Os 64 Bit Download; Os X Iso Download Free; The macOS Mojave was the fifteenth release from Apple for their macOS family and was made available to the public on the 24th of September in 2018. The macOS Mojave 10.14.1 (the updated version) was released on the 30th of October of the same year with a couple of new updates. Supported OS: Mac, Windows, Linux. Conclusion: Deluge is another popular open-source torrent client that’s designed for Mac and highly likely compatible with Big Sur. It isn’t the best-looking app, with an outdated interface, but it is free to use and ad-free.

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?

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.

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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.

macOSLatest version
macOS Big Sur11.5.1
macOS Catalina
10.15.7
macOS Mojave10.14.6
macOS High Sierra10.13.6
macOS Sierra10.12.6
OS X El Capitan10.11.6
OS X Yosemite10.10.5
OS X Mavericks10.9.5
OS X Mountain Lion10.8.5
OS X Lion10.7.5
Mac OS X Snow Leopard10.6.8
Mac OS X Leopard10.5.8
Mac OS X Tiger10.4.11
Mac OS X Panther10.3.9
Mac OS X Jaguar10.2.8
Mac OS X Puma10.1.5
Mac OS X Cheetah10.0.4

Apple has released the next Mac OS Catalina (10.15) in early October. With the upgrade, Apple has finally pulled the plug on older '32-bit' apps, requiring all software (apps) you run to be 64-bit. This transition has been a long time coming and most current software complies. Here is an explanation about the difference and why Apple is doing this.

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32-bit processors and 32-bit operating systems were used in all computers (Mac & PC) until the early 1990s. The software that ran on these computers was also 32-bit. In 2006 and 2007, Apple transitioned from the PowerPC hardware to Intel hardware using 64-bit processors. With the launch of Mac OS Snow Leopard in 2009, Apple's operating system took advantage of the faster 64-bit processor.

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Compared to 32-bit apps, 64-bit apps can take advantage of more memory and offer faster system performance. Certain technologies from Apple will only work with 64-bit apps. For Apple to ensure that all Mac apps going forward include all of the latest advancements and optimizations, support for 32-bit needs to end.

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32-bit apps can run on a 64-bit system as they've been doing for years, but Apple wants to get rid of outdated apps to make sure everything that runs on the Mac is properly optimized and isn't an unnecessary drain on system resources. It has been 9 years, so it truly is time for this change to happen.

Apple started warning Mac users about plans to end support for 32-bit apps when they introduced macOS High Sierra. These warnings are popups that appear when restarting the computer or opening an app. If you dismiss the notice it will reappear in 30 days. Apple is really being clear about this upgrade!

What does this mean for you? If you are running older software, you must upgrade it BEFORE you upgrade to Mac OS Catalina. Some common examples are Microsoft Office 2011 (current versions are Microsoft Office Home & Student 2019 or Microsoft Office 365) and Quicken 2007 (current version is Quicken 2019).

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Apple software such as Safari, Photos, Contacts, etc., are all considered part of the Mac OS and will be fine.
To check if an app is 32-bit or 64-bit, and to see what older apps might be installed:

  • Click the Apple symbol () in the menu bar at the upper left corner of your Mac's screen.

  • Click on About This Mac.

  • Choose 'System Report' at the bottom of the window.

  • Scroll down to the Software list on the sidebar.

  • Select 'Applications.'

  • Scroll all the way to the right to see the 64-bit list.

Anything in this list that has a 'Yes' next to it is 64-bit and does not need to be updated. Anything that says 'No' will need to be updated. (NOTE: it can take a while for this scan to complete.) This can be confusing to read, but IF you update all the apps you use regularly, they should show in this list as a 'Yes.' IF they don't, you will need to find out if the developer makes a new version.

IF you choose to not upgrade to Mac OS Catalina, your current apps will continue to function, but be aware that may change as Apple releases security updates, etc.

NOTE: we are NOT yet recommending Catalina but getting prepared before the time to upgrade comes is always a good idea!.

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