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- Download Firefox For Mac Os High Sierra
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Check compatibility
You can upgrade to macOS High Sierra from OS X Mountain Lion or later on any of the following Mac models. Your Mac also needs at least 2 GB of memory and 14.3 GB of available storage space.
MacBook introduced in late 2009 or later
MacBook Air introduced in late 2010 or later
MacBook Pro introduced in mid-2010 or later
Mac mini introduced in mid-2010 or later
iMac introduced in late 2009 or later
Mac Pro introduced in mid-2010 or later
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 macOS High Sierra, 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. Find out how to back up your Mac.
Mac Os Sierra 10.12 Free Apple Download
Get connected
It takes time to download and install macOS, so make sure you have a reliable Internet connection. If you’re using a Mac notebook computer, plug it into an AC power source.
Download macOS High Sierra
For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of the Mac operating system.
If you still need macOS High Sierra, use this App Store link: Get macOS High Sierra.
Begin installation
After downloading, the installer will open automatically.
Click Continue and follow the on-screen instructions. You may find it easiest to start the installation in the evening so that it can be completed overnight, if needed.
Mac Os 10.12 Sierra Download
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.
Allow the installation to be completed
Mac Os High Sierra Features
Please allow the installation to be completed without putting your Mac to sleep or closing its lid. Your Mac may restart, display a progress bar or show a blank screen several times as it installs both macOS and related updates to your Mac firmware.
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Learn more
Download Firefox For Mac Os High Sierra
- If you have hardware or software that isn’t compatible with High Sierra, you may be able to install an earlier macOS, such as Sierra or El Capitan.
- macOS High Sierra can't be installed on top of a later version of macOS, but you can erase your disk first or install on another disk.
- You can use macOS Recovery to reinstall macOS.