- Easily check which versions of mac OS, iOS, iPadOS, or watchOS are compatible with your Mac model or iDevice. Guide includes OS X 10.8.x to macOS 11.0.x.
- Mac OS, operating system (OS) developed by the American computer company Apple Inc. The OS was introduced in 1984 to run the company’s Macintosh line of personal computers (PCs). The Macintosh heralded the era of graphical user interface (GUI) systems, and it inspired Microsoft Corporation to develop its own GUI, the Windows OS.
The Libraries of Mac OS X: /System/Library Core Services CFMSupport Extensions Fonts Frameworks PreferencePanes Printers QuickTime ScreenSavers Services Sounds StartupItems. The Libraries of Mac OS X: /Library Application Support ColorSync Contextual Menu. Core Operating System (Core OS) is a system for container-based virtualization. Core OS deploys applications in virtual containers as a way to provide effective hardware virtualization for businesses. The Mac OS is a graphical operating system developed by Apple Inc. The tenth version of the Mac OS is the Mac OS X which was launched in 2001. The structure of the Mac OS X includes multiple layers. The base layer is Darwin which is the Unix core of the system. Next layer is the graphics system which contains Quartz, OpenGL and QuickTime.
As of Mac OS X 10.10, Apple will automatically update the partition scheme of the drive to use CoreStorage on any computer with Intel's hardware-based cryptography technology. This will be the default for new systems, but can also be automatically modified during a Mac OS X update to Mac OS X 10.10. At this time, CoreStorage is not supported by Symantec Encryption Desktop for the Drive Encryption feature.
For more information on system requirements, please see the Symantec Encryption Desktop 10.3.2 for Mac OS X Release notes
NOTE: CoreStorage technology is used by Apple to enable their Fusion Drive technology and FileVault 2 encryption technology. If either of these technologies are being used on the Macintosh system, these features will need to be disabled to encrypt the drive with Symantec Drive Encryption. This article describes how to revert a CoreStorage logical volume to a physical volume when neither Fusion Drive or FileVault 2 is being used.
CAUTION: As these steps go over modifying the drive partition layout, it is recommended to have a recent backup before performing these steps.
This process requires the use of the command line utility Terminal located in /Applications/Utilities/ and also requires a local administrator account to run. If you are logged in with a domain user, you can run the 'switch user' command to log in as a local admin:
Tip: To open Terminal, on the keyboard, press the command key + the spacebar key, this should open the spotlight field. Type 'terminal', and hit enter, this should launch the Terminal application.
Types of blackjack. Once Terminal is launched, run the following command:
diskutil cs list
Igt black widow slot machine.
If CoreStorage is enabled, the following information will be seen with unique data for the Mac computer:
If CoreStorage is enabled, the following information will be seen with unique data for the Mac computer:
Note the bolded lines above:
and
As long as 'Revertible' equals 'Yes (no decryption required)' the volume can be reverted. Run the following command followed by the Logic Volume UUID (underlined in the example above) to execute the revert operation as is listed in the following example:
Once the conversion is complete, restart the computer.
NOTE: In some rare instances, the computer will restart to the built-in recovery partition if available, or present a system not found error. In most of these cases, simply resetting the startup disk will boot the computer appropriately. From the recovery parition choose the menu in the upper left: >Startup Disk and choose your internal drive. Alternately you may hold option after the statup chime and your disk will be listed.
Verify CoreStorage has been disabled by launching Terminal again and run the following command:
If CoreStorage was disabled, the following will be seen:
Symantec Encryption Desktop 10.3.2 MP7 and above can then be installed on the system, and the drive can then be encrypted. For information on which versions of Symantec Encryption Desktop 10.3.2/10.4 can be installed on which versions of Mac OS X, see article TECH174563.
Orpheus mac os. Note: CoreStorage or FileVault2 can also be disabled from Boot option by following below mentioned steps with a help of Mac Genius. Please do take a backup of your computer before performing any changes on your computer:
Using Disk Utility
1. Boot your Mac and hold down ⌘-R (Command –R) to boot from the Mac’s Recovery HD partition.
2. Open Disk Utility.
3. Select your locked hard drive.
4. Under the File menu, select Turn Off Encryption…
5. When prompted for a password, you can enter your password for the drive. Once provided, decryption of the encrypted volume should begin.
The drive should begin decrypting.
1. Boot your Mac and hold down ⌘-R (Command –R) to boot from the Mac’s Recovery HD partition.
2. Open Disk Utility.
3. Select your locked hard drive.
4. Under the File menu, select Turn Off Encryption…
5. When prompted for a password, you can enter your password for the drive. Once provided, decryption of the encrypted volume should begin.
The drive should begin decrypting.
From command line
1. Boot your Mac and hold down ⌘-R (Command –R) to boot from the Mac’s Recovery HD partition.
2. Open Terminal.
3. Run the following command to get the UUID of the encrypted drive: diskutil corestorage list
4. Once you have the UUID, you can unlock the drive using the following command: diskutil corestorage revert UUID -stdinpassphrase
5. You’ll be prompted for the password/passphrase of an account that’s authorized to unlock the encryption. Once provided, decryption of the encrypted volume should begin.
The drive should begin decrypting.
1. Boot your Mac and hold down ⌘-R (Command –R) to boot from the Mac’s Recovery HD partition.
2. Open Terminal.
3. Run the following command to get the UUID of the encrypted drive: diskutil corestorage list
4. Once you have the UUID, you can unlock the drive using the following command: diskutil corestorage revert UUID -stdinpassphrase
5. You’ll be prompted for the password/passphrase of an account that’s authorized to unlock the encryption. Once provided, decryption of the encrypted volume should begin.
The drive should begin decrypting.
Enrollment Issues with CoreStorage
When enrolling a Mac client to a Symantec Encryption Management Server with the auto-encrypt functionality enabled, and CoreStorage in use on the Mac, the following error will be displayed:
An Error Occured
PGPError :-12000
PGPError :-12000
This occurs as a result of CoreStorage being in use on the system.
If the system still cannot be encrypted, and the system is running Mac OS X 10.11, El Capitan, disabling SIP is also needed. See article TECH235027 for more information on this.
Follow this article to disable and re-enroll the Mac user. To re-enroll, follow the steps in article TECH178358.
If the system still cannot be encrypted, and the system is running Mac OS X 10.11, El Capitan, disabling SIP is also needed. See article TECH235027 for more information on this.
Follow this article to disable and re-enroll the Mac user. To re-enroll, follow the steps in article TECH178358.
Which Mac operating system is the best is a topic of numerous debates among Apple fans.
Since the mission of this blog is to refute myths and legends around Macs, it’s time for me to provide my 2 cents about the issue on hand. While everything below is just my opinion, as a long-time Mac user and veteran software engineer, I hope my opinion worth something.
The best Mac OS version is the one that your Mac is eligible to upgrade to. In 2021 it is macOS Big Sur. However, for users that need to run 32-bit apps on Mac, the best macOS is Mojave. Also, older Macs would benefit if upgraded at least to macOS Sierra for which Apple still releases security patches.
How to Tell Which macOS You Are Running
To find out which macOS is currently running on your Mac, follow these steps:
- Click on Apple logo in the top left corner of the menubar
- In the dropdown click on the first item: About This Mac
- The first line in the Overview tab is the name of the current OS.
What Version of OS Can My Mac Run?
Not all Macs can be upgraded to the latest OS version. For instance, old Macs powered by PowerPC CPUs cannot run OS intended for Intel-based computers. Also, some versions have hardware limitations.
Crankship courier mac os. For instance, Mojave cannot be installed on MacBook Pro earlier than Mid 2012 model.
Check below to know exactly what version of OS your Mac can run.
Which OS is Best for my Mac
Anytime someone asks me which OS is best for them I always suggested going with the latest. Things have changed recently, however.
Should I Upgrade to macOS Catalina or Big Sur?
While personally I like macOS Big Sur and have it installed on my MacBook Pro, it comes with serious breaking changes.
The first issue is compatibility.
Big Sur is a transition OS which is designed to help Apple to move from Intel processors to their own chips on ARM.
After I installed Big Sur on my MacBook Pro mid 2020 (pre-Silicon), most of my apps, including Microsoft Office, were working as expected.
However, my VMWare Fusion 11 does not start anymore, so I have to purchase a new license if I want to keep using it (or roll back to Catalina). Luckily, I took a full backup before the upgrade.
The second breaking issue is the lack of 32-bit app support.
macOS Catalina and Big Sur can only run 64-bit apps.
If you wondering whether you should upgrade to macOS Catalina or Big Sur, first verify that you don’t have any 32-bit apps. But first, take a back up, so you can go back in case something breaks after the upgrade.
For instance, I had to remove uTorrent after upgrade. And I didn’t know that uTorrent is 32-bit!
How to Know If App is 32-bit or 64-bit
To find out whether the app on your Mac is 32-bit or 64-bit follow these steps:
- Click on Apple logo in the top left corner of the Mac screen
- Click on About This Mac option
- Click on System Report button in Overview tab (first one)
- Scroll down to Software -> Applications
- Find the app and check Kind
Which macOS Should I Use
If you have an older Mac which is not eligible to upgrade with some latest software or hardware, I’d suggest upgrading at least to Sierra (or better High Sierra) for the following reasons:
- Sierra is still supported by Apple, and it gets security updates
- APFS file system is available
- It supports Siri
- Significant security improvements
The most important point when choosing the best OS is the ability to get security updates. While Apple generally does not announce the OS end of life dates, it is possible to know when they stop releasing security updates from this page.
For instance, according to the page, the last security update for OS X Yosemite was released on September 12, 2017. The last update for OS X El Capitan was in July 2018, and Carnegie Mellon University confirmed that El Capitan’s end of life date was August 2018.
Snow Leopard Myth
I know that some users on forums believe that the best OS version for Macs was Snow Leopard. But that is a myth. And I know how such myths get created.
Once I worked in the company, which was selling a 20-year old product. And customers were still using and didn’t want to switch to new versions, because the old one was rock solid.
Curtained moon mac os. I then talked to the engineer who worked on the project, and he revealed that the product was a total disaster when it was first deployed. Engineers had to work on-site for almost a year in order to fix all bugs.
After five or so years of polishing the product, it becomes virtually bug-free, and nobody now remembers how bad it was when it was first rolled out. A similar thing happened Snow Leopard, and it was recognized as best mac os version after some time.
How to Update to the Latest Version
There are two ways to update to the latest OS version on Mac:
- From the Software Update section in System Preferences
- Use a download link
Using Software Update
This is by far the best option, but it only available if you have Yosemite, or later OS installed already. If you enabled automatic updates, then Mac will inform you that the next macOS is available.
Just open System Preferences, go to Software Update and click on the Upgrade Now button.
This method is also best if wondering how to check if you have the latest version of OS installed on your Mac. Only the version compatible with your hardware will appear here.
For instance, my the latest version for Mac Mini 2012 is Mojave, I can’t install anything newer than that.
If you are having problems with updates or having issues post-upgrade check my post about troubleshooting macOS.
Using download links
For older systems or in case you need to downgrade, you have to download a standalone installer in DMG format. DMG stands for disk image, similar to ISO, just different formats.
After downloading the installer, just double click on it and follow instructions. Again, do not forget to take a backup before the upgrade.
Mac OS Comparisons: Requirements, Features, Compatibility, Download Links
Following is a high-level description of all Mac operating systems as early as Mountain Lion.
You can refer to those descriptions when deciding which operating system is best for your iMac, Mac Pro, Mac mini, or MacBook.
With each OS description, I included a list of Macs supported. However, you can use Mac OS compatibility checker for more detailed information.
macOS 11 Big Sur
macOS v11 (codename Big Sur) is the latest version of the operating system for Apple computers.
Release date: October 13, 2020
Hardware Requirements: RAM requirement 4GB. Big Sur is the first OS to support new Macs using ARM technology (in the future).
Features
- The biggest design refresh since macOS X.
- Support for new ARM processors.
- Safar improved performance and power consumption.
- Time Machine supports backup to APFS volumes.
- One-click translation for 7 languages.
- Redesigned maps
Software Compatibility Issues
Only 64-bit apps are allowed to run on Big Sur.
How to install
There are two ways to install Big Sur: enable automatic updates in System Preferences or download by using the following link.
Or check my post with tips on installing macOS on unsupported devices.
List of Apple computers compatible with macOS Big Sur
- MacBook (2015 and later)
- MacBook Air (2013 and later)
- MacBook Pro (2013 and later)
- Mac mini (2014 and later)
- iMac models (2014 and later)
- iMac Pro (2017 and later)
- Mac Pro (2013 and later)
macOS 10.15 Catalina
Release date: October 7, 2019
Hardware Requirements: RAM requirement increased from 2GB to 4GB.
Features
- Introduced Sidecar, which allows for Macs to use an iPad as an external display.
- iTunes was replaced by separate apps: Music, Podcasts, and TV.
- Find My Mac and Find My Friends have merged into one app.
MacOS Big Sur
Software Compatibility Issues
macOS Catalina is the first Mac operating system that does not support 32-bit applications. Only 64-bit apps are allowed to run on Catalina.
How to install
There are two ways to install Catalina: enable automatic updates in System Preferences or download by using the following link.
List of Apple computers compatible with macOS Catalina
- MacBook (Early 2015 or later)
- MacBook Air (Mid 2012 or later)
- MacBook Pro (Mid 2012 or later)
- Mac mini (Late 2012 or later)
- iMac models (Late 2012 or later)
- iMac Pro (All models)
- Mac Pro (Late 2013)
macOS 10.14 Mojave
Release date: September 24, 2018
Hardware Requirements: 2GB RAM and 18.5GB free space on disk
Features
- The main feature of Mojave is “Dark Mode”
- FaceTime adds group feature which allows chatting with up to 32 people
- News, Stocks, Voice Memos, and Home apps were ported from iOS to Mac.
How to install
If your Mac is eligible to update to Mojave, then the easiest way to install it is by enabling automatic updates. Downloading a standalone Mojave installer could be a little tricky.
Mac Core Audio
List of Apple computers compatible with macOS Mojave
- MacBook (Early 2015 or later)
- MacBook Air (Mid 2012 or later)
- MacBook Pro (Mid 2012 or later)
- Mac mini (Late 2012 or later)
- iMac (Late 2012 or later)
- iMac Pro (All models)
- Mac Pro (Late 2013 and 2010-2012 models with upgraded GPU)
macOS 10.13 High Sierra
Release date: September 25, 2017
Hardware Requirements: 2GB RAM and 14.3GB free space on disk
Features
- APFS (Apple File System) becomes the default file system in High Sierra. It’s a significant upgrade from the older HFS+ in terms of speed, size, and security
- iCloud support of Messages which allows sync messages of the account across multiple devices
- Mail app uses 35% less storage space due to optimizations
List of Apple computers compatible with macOS High Sierra
- MacBook (Late 2009 or newer)
- MacBook Pro (Mid 2010 or newer)
- MacBook Air (Late 2010 or newer)
- Mac mini (Mid 2010 or newer)
- iMac (Late 2009 or newer)
- Mac Pro (Mid 2010 or newer)
How to install
Here is a High Sierra download link.
macOS 10.12 Sierra
This is the first macOS version. Previous OS versions for Macs were called OS X (X stands for 10).
Release date: September 20, 2016
Hardware Requirements: 2GB RAM and 8GB free space on disk
Features
- Siri was introduced to Macs
- Optimized storage with iCloud sync
- Auto-lock feature allows unlocking MacBook with paired Apple Watch
- APFS preview available
- Disk Utility can manage RAID sets again
- Significant security improvements
How to install
Here is a Sierra download link.
List of Apple computers compatible with macOS Sierra
- MacBook (Late 2009 or newer)
- MacBook Pro (Mid 2010 or newer)
- MacBook Air (Late 2010 or newer)
- Mac mini (Mid 2010 or newer)
- iMac (Late 2009 or newer)
- Mac Pro (Mid 2010 or newer)
OS X 10.11 El Capitan
Last OS X version.
Release date: September 30, 2015
Hardware Requirements: 2GB RAM and 8GB free space on disk
Features
- System Integrity Protection – a security feature that protects even when the root user executes the process
- Performance improvements: open PDF files four times faster, Mail is twice faster, launching apps 40% faster
- Notes app similar to the app in iOS
Macs compatible with OS X El Capitan
same as OS Mountain Lion.
How to install
Here is El Capitan download link.
OS X 10.10 Yosemite
Release date: October 16, 2014
Hardware Requirements: 2GB RAM and 8GB free space on disk
Macs compatible with OS X Yosemite
Same as OS Mountain Lion.
Features
- Major user design overhaul
- Introduction of Handoff and Continuity features
- Photos app replaced iPhoto and Aperture
How to install
Here is Yosemite download link.
OS X 10.9 Mavericks
First free Mac OS. Previous OS versions vary from $19.99 to $129.
Release date: October 22, 2013
Hardware Requirements: 2GB RAM and 8GB free space on disk
Features
- Compressed Memory feature automatically compresses inactive apps when approaching maximum memory capacity
- Timer coalescing is a feature that reduces CPU usage by up to 72 percent
- App Nap puts apps that are not currently visible to sleep
Macs compatible with OS X Mavericks
Same as OS Mountain Lion.
How to install
OS X Mavericks installer is not available on Apple Site. Follow instructions here to install Mavericks.
OS X 10.8 Mountain Lion
Must be purchased. Fixed many bugs introduced in OS X Lion.
Release date: July 25, 2012
![2012 12 core mac pro 2012 12 core mac pro](https://roon-community-uploads.s3.amazonaws.com/optimized/3X/2/b/2befea72f69a6deb536a45ba32e284b4c8bc569c_2_690x359.jpeg)
System Requirements: 2GB RAM and 8GB free space on disk
Features
- New apps: Notification Center, Notes, Messages, Game Center
- AirPlay mirroring allowed to mirror Mac screen to Apple TV
- Application updates automatically install from the App Store
List of Apple computers compatible with OS X Mountain Lion
- iMac (Mid-2007 or newer)
- MacBook (Late 2008 Aluminum, or Early 2009 or newer)
- MacBook Air (Late 2008 or newer)
- MacBook Pro (Mid/Late 2007 or newer)
- Mac mini (Early 2009 or newer)
- Mac Pro (Early 2008 or newer)
- Xserve (Early 2009)
How to install
Mountain Lion installer is not available on Apple Site. Follow instructions here to install OS X Mountain Lion.
List of older Mac OS Versions
Following Mac OS versions are still running on older Macs, but Apple does not support them anymore, and there is no point to upgrade (or downgrade) to them:
- OS X 10.7 Lion
- OS X 10.6 Snow Leopard
- Mac OS X 10.5 Leopard
- Mac OS X 10.4 Tiger
- Mac OS X 10.3 Panther
- Mac OS X 10.2 Jaguar
- Mac OS X 10.1 Puma
- Mac OS X 10.0 Cheetah