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.
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Find out how to upgrade to macOS Big Sur, the latest version of macOS.
Check compatibility
The OS X 10.11 El Capitan upgrade is available only at the Mac App Store, which means if you have versions Snow Leopard 10.6.7, Mavericks, Yosemite, Lion, and Mountain Lion, the Mac App Store already exists on your computer. 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 10.10 can upgrade Mavericks, Mountain Lion, Lion or Snow Leopard.
If a macOS installer can't be used on your Mac, the installer will let you know. For example, it may say that it's too old to be opened on this version of macOS, or that your Mac doesn't have enough free storage space for the installation.
To confirm compatibility before downloading, check the minimum requirements for macOS Catalina, Mojave, High Sierra, Sierra, El Capitan or Yosemite. You can also find compatibility information on the product-ID page for MacBook Pro, MacBook Air, MacBook, iMac, Mac mini or Mac Pro.
Make a backup
Before installing, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Find out how to back up your Mac.
Download macOS
It takes time to download and install macOS, so make sure you're plugged into AC power and have a reliable Internet connection.
Safari uses these links to find the old installers in the App Store. After being downloaded from the App Store, the installer opens automatically. Mac os catalina macbook air 2015 review philippines.
AppleVis is the leading online resource for blind and low vision users of Apple's range of Mac computers, the iPhone, iPad, Apple Watch, Apple TV, and iPod touch. Our large and active community draws upon a wealth of individual knowledge and experience to help each other in getting the most from. For a new installation of Windows 10 Creators Update on an Apple Mac using Boot Camp, you must first install the Windows 10 Anniversary Update using the ISO file, and then update to Windows 10 Creators Update. As expected, mortgage rates continued to inch up but are still hovering around three percent, keeping interested buyers in the market. However, residential construction has declined for two consecutive months and given the very low inventory environment, competition among potential homebuyers is a challenging reality, especially for first-time homebuyers. 
A recent update for Mac devices could potentially wipe out all the data on your machine. Keep reading to find out what happened and how to get a new patch to fix the glitch. Here’s the backstory. Now, more features are supported, including commenting, conditional formatting, and bubble charts. And each update adds greater compatibility. It’s never been easier to take a Microsoft Office document from your Mac or PC and import it into Pages, Numbers, and Keynote. So you can keep the workflow flowing.
- macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite or Mavericks
- macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks or Mountain Lion
- macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks or 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 start 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
Upgrade To 10.11
Install macOS
Follow the onscreen instructions in the installer. It may be easiest to start the installation in the evening so that it can be completed overnight, if needed.
If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper.
Please allow the installation to finish without putting your Mac to sleep or closing its lid. Your Mac may restart, show a progress bar or show a blank screen several times while macOS and related firmware updates are being installed.
Upgrade To 10.11.6
Learn more
Upgrade To 10.11
You may also be able to use macOS Recovery to reinstall the macOS you're using now, upgrade to the latest compatible macOS or install the macOS that came with your Mac.