May 28, 2018 About Mac OS Mavericks 10.9. Apple OS X Mavericks was first announced in June 2013 and was then released in October of 2013. It was the tenth big release of the Apple OS X line. At the same time, Mavericks was promoted and marketed as a major release just as was the case with the Lion and Mountain Lion OS X updates which came before the Mavericks. Dan Frakes wrote a guide to creating OS X 10.11 El Capitan install disks for Macworld. There is one qualification to all this. Apple won’t allow a newer Mac to download versions of OS X that aren’t compatible with that Mac, so on a 27-inch iMac with Retina display, for instance, the App Store app refuses to let you download Mac OS X 10.7 Lion.
Apple released Mac OS X Lion on July 20, 2011, the eighth major release of the world’s most advanced operating system with more than 250 new features, is available today as a download from the Mac App Store.
Some of the fantastic features in Lion include new Multi-Touch gestures; system-wide support for full-screen apps; Mission Control, an innovative view of everything running on your Mac.
The Mac App Store, the best place to find and explore great software, built right into the OS; Launchpad, a new home for all your apps; and a completely redesigned Mail app.
Lion is the best version of OS X yet, and we’re thrilled that users around the world can download it starting today
“Lion makes upgrading a Mac easier than ever before; just launch the Mac App Store, buy Lion with your iTunes account, and the download and install process will begin automatically.”
Additional new features in Lion include
Lion requires an Intel-based Mac with a Core 2 Duo, i3, i5, i7 or Xeon processor and 2GB of RAM. Lion is an upgrade and can be installed on all your authorized personal Macs.
The OS X Lion Up-to-Date upgrade will be available through the Mac App Store at no additional charge to all customers who purchased a qualifying new Mac system from Apple or an Apple Authorized Reseller on or after June 6, 2011.
Download Official Mac AppStore Lion Installer.
This can be used with Official Mac to Install or Upgrade Mac OS X Lion. Check compatibility
You can upgrade to OS X El Capitan from OS X Snow Leopard or later on any of the following Mac models. Your Mac also needs at least 2GB of memory and 8.8GB of available storage space.
MacBook introduced in 2009 or later, plus MacBook (13-inch, Aluminum, Late 2008)
MacBook Air introduced in late 2008 or later MacBook Pro introduced in mid 2007 or later Mac mini introduced in early 2009 or later iMac introduced in mid 2007 or later Mac Pro introduced in early 2008 or later Xserve models introduced in early 2009
To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with OS X El Capitan, the installer will let you know.
Make a backup
Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Get connected
It takes time to download and install OS X, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download OS X El CapitanMac Os X 10.7.4 Installer Mac App Store Free
For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of macOS.
If you still need OS X El Capitan, use this link: Download OS X El Capitan. A file named InstallMacOSX.dmg will download to your Mac.
Install the macOS installer
Double-click the downloaded file to open a window showing its contents. Then double-click the file within, named InstallMacOSX.pkg.
Follow the onscreen instructions, which will guide you through the steps necessary to install.
Begin installationMac Os X 10.7 Installer Download
After installation of the installer is complete, open the Applications folder on your Mac, then double-click the file named Install OS X El Capitan.
Mac Os X 10.7.4 Installer Mac App Store Download
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
Mac Os X 10.7.4 Installer Mac App Store OnlineAllow installation to complete
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both OS X and related updates to your Mac firmware.
Learn moreMac Os X 10.7.4 Installer Mac App Store Software Updates
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