To get the latest features and maintain the security, stability, compatibility, and performance of your Mac, it's important to keep your software up to date. Apple recommends that you always use the latest macOS that is compatible with your Mac.
3: Philip is right but here is a clarification, Icon Composer is still available. In XCode press the XCode menu Open Developer Tool More Developer Tools. In the web site that appears you need to search for “Graphics Tools” and download the dmg file with the same name (around 120 MB). It will contain the Icon Composer app. Adding the.app File for macOS to Composer. Composer packages the.app file so you can cache and install it using policies. Open Composer and authenticate locally. Drag the.app file into a folder in Composer. Select the.app file from the Sources list in the sidebar. In the toolbar, click Build as PKG.
Learn how to upgrade to macOS Big Sur, the latest version of macOS.
Check compatibility
The version of macOS that came with your Mac is the earliest version it can use. For example, if your Mac came with macOS Big Sur, it will not accept installation of macOS Catalina or earlier.
If a macOS can't be used on your Mac, the App Store or installer will let you know. For example, it might say that it's not compatible with this device or is too old to be opened on this version of macOS. To confirm compatibility before downloading, check the minimum hardware requirements:
- macOS Catalina 10.15 hardware requirements
- macOS Mojave 10.14 hardware requirements
- macOS High Sierra 10.13 hardware requirements
- macOS Sierra 10.12 hardware requirements
- OS X El Capitan 10.11 hardware requirements
- OS X Yosemite 10.10 hardware requirements
Download macOS using Safari on your Mac
Safari uses these links to find the old installers in the App Store. After downloading from the App Store, the installer opens automatically.
- macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks
- macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
- macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [Version Name]. Open that app from your Applications folder to begin installing the operating system.
- macOS Sierra 10.12 can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion
- OS X El Capitan 10.11 can upgrade Yosemite, Mavericks, Mountain Lion, Lion, or Snow Leopard
- OS X Yosemite 10.10can upgrade Mavericks, Mountain Lion, Lion, or Snow Leopard
Installing Drush on MacOSX with Composer
In order to install Drush, you should first install Composer. Composer is often required for Drupal 8 and once Composer is installed, installing Drush is easy.
1. Open the Terminal app on your Mac.
2. Install Homebrew via the instructions here: https://brew.sh/
3. Install Composer globally on your Mac with this command:
brew install composer
4. If your computer doesn’t have a “/usr/local/bin” directory, create that first with this command:
sudo mkdir -p /usr/local/bin
…that creates the directory; you should be prompted to enter your computer’s password.
Now, when you type composer --version and press Enter, we’ll see that you have Composer installed!
5. Install Drush via Composer:
Note!: Please do not install Drush using composer global require. See Pantheon’s article, Fixing the Composer Global command.
Instead, first install the Composer global require command:
composer global require consolidation/cgr
6. Add the vendor/bin from the Composer home directory to your $PATH.
(Thereafter, you may substitute cgr for any command line tool whose installation instructions recommends the use of Composer global require. Example: cgr drush/drush)
If you get a popup to install the Xcode Developer tools, go ahead and install Xcode.
7. Update the system $PATH:
vim ~/.bash_profile
to edit the file press the i key to enter Insert mode
…next, copy and paste this into that file:
export PATH='$HOME/.composer/vendor/bin:$PATH'PATH='$(composer config -g home)/vendor/bin:$PATH'
Press the Escape (esc) key to switch back to command mode.
Type :wq and press Enter to save and quit the file.
8. Quit the Terminal app (or, run the “source” command to load the .bash_profile file without having to restart the Terminal.)
To run the source command:
Install Composer Mac Catalina
source ~/.bash_profile
9. Now you will actually install Drush:
Install latest stable Drush:
cgr drush/drush
Install Composer Macos Catalina Free
Now if you type drush and press Enter, you’ll see that Drush is installed, and working on your machine!